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Research Article| Volume 46, ISSUE 3, P188-196, May 2014

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The Influence of Home Food Environments on Eating Behaviors of Overweight and Obese Women

      Abstract

      Objective

      To describe home food environments and examine which aspects are associated with fruit and vegetable intake and percent calories from fat among overweight and obese women.

      Design

      Baseline data from a weight gain prevention trial collected through telephone interviews.

      Setting

      Participants were recruited from 3 federally qualified health centers in rural Georgia.

      Participants

      Overweight and obese patients (n = 319) were referred by their providers if they had a body mass index (BMI) > 25 and lived with at least 1 other person. Participants were primarily African American (83.7%), with a mean BMI of 38.4.

      Main Outcome Measures

      Fruit and vegetable intake and percent calories from fat.

      Analysis

      Descriptive statistics and multiple regression.

      Results

      Participants reported a large variety of both fruits and vegetables and unhealthy foods in their homes, and an average of 2.6 family meals from non-home sources per week. Eating family meals with the television on was common. Availability of fruits and vegetables in the home (P < .001) and frequency of fruit shopping (P = .01) were associated with fruit and vegetable intake. The number of unhealthy foods in the home (P = .01) and food preparation methods (P = .01) were associated with percent calories from fat.

      Conclusions and Implications

      Home food environments may be effective intervention targets for nutrition programs designed for overweight and obese women.

      Key Words

      Introduction

      Most ecologic models of obesity determinants include the home as an important microenvironment, with several potential intervention targets.
      • Booth S.L.
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      Environmental and societal factors affect food choice and physical activity: rationale, influences, and leverage points.
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      An ecological approach to creating active living communities.
      By providing both social and physical cues for eating, exercise, and sedentary activity, the home can trigger behaviors both positively and negatively associated with weight status. Until recently, much of the research on home environments was focused on children because of their dependence on caregivers for eating and activity opportunities.
      • Ding D.
      • Sallis J.F.
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      • Rosenberg D.E.
      Neighborhood environment and physical activity among youth: a review.
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      Model of the home food environment pertaining to childhood obesity.
      Because 68% of calories come from home food sources for US adults and considerable leisure time is spent at home,

      Lin B-H, Guthrie J. Nutritional Quality of Food Prepared at Home and Away From Home, 1977–2008. Washington, DC: United States Department of Agriculture, Economic Research Service; December 2012. http://www.ers.usda.gov/publications/eib-economic-information-bulletin/eib105.aspx#.UvKS0PldXE0. Accessed February 5, 2014.

      the home clearly has a significant role in shaping behaviors that affect weight status in both adults and children.
      Models of the home food environment often include availability and accessibility of healthy and unhealthy foods.
      • Rosenkranz R.R.
      • Dzewaltowski D.A.
      Model of the home food environment pertaining to childhood obesity.
      • Gattshall M.L.
      • Shoup J.A.
      • Marshall J.A.
      • Crane L.A.
      • Estabrooks P.A.
      Validation of a survey instrument to assess home environments for physical activity and healthy eating in overweight children.
      Among adults, high-fat foods in the home have been associated with fat intake,
      • Gattshall M.L.
      • Shoup J.A.
      • Marshall J.A.
      • Crane L.A.
      • Estabrooks P.A.
      Validation of a survey instrument to assess home environments for physical activity and healthy eating in overweight children.
      • Patterson R.E.
      • Kristal A.R.
      • Shannon J.
      • Hunt J.R.
      • White E.
      Using a brief household food inventory as an environmental indicator of individual dietary practices.
      • Hermstad A.K.
      • Swan D.W.
      • Kegler M.C.
      • Barnette J.K.
      • Glanz K.
      Individual and environmental correlates of dietary fat intake in rural communities: a structural equation model analysis.
      and fruit and vegetable availability has been linked with fruit and vegetable intake
      • Larson N.
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      Predictors of fruit and vegetable intake in young adulthood.
      and lower fat intake.
      • Gattshall M.L.
      • Shoup J.A.
      • Marshall J.A.
      • Crane L.A.
      • Estabrooks P.A.
      Validation of a survey instrument to assess home environments for physical activity and healthy eating in overweight children.
      Gorin et al
      • Gorin A.A.
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      • Wing R.R.
      Home food and exercise environments of normal-weight and overweight adults.
      found that overweight adults had fewer low-fat snacks and fruit and vegetables in the home and more high-fat snacks than did normal weight adults.
      The quality of foods available in the home is largely influenced by grocery shopping behavior, use of non-home sources for family meals, and food preparation methods. Studies have shown that households with overweight individuals purchased foods higher in fat and calories than those with normal weight adults
      • Ransley J.K.
      • Donnelly J.K.
      • Botham H.
      • Khara T.N.
      • Greenwood D.C.
      • Cade J.E.
      Use of supermarket receipts to estimate energy and fat content of food purchased by lean and overweight families.
      and that more frequent shopping is related to better diets.
      • Bhargava A.
      • Jolliffe D.
      • Howard L.L.
      Socio-economic, behavioural and environmental factors predicted body weights and household food insecurity scores in the Early Childhood Longitudinal Study-Kindergarten.
      The frequency with which family meals are obtained from non-home sources, such as fast food, takeout, and delivery, also has implications for weight management and healthfulness of the home food environment.
      • Fulkerson J.A.
      • Farbakhsh K.
      • Lytle L.
      • et al.
      Away-from-home family dinner sources and associations with weight status, body composition, and related biomarkers of chronic disease among adolescents and their parents.
      One study found that parents who reported at least 1 family dinner per week from 1 of these sources were significantly more likely to be overweight or obese than those who did not report these food sources.
      • Fulkerson J.A.
      • Farbakhsh K.
      • Lytle L.
      • et al.
      Away-from-home family dinner sources and associations with weight status, body composition, and related biomarkers of chronic disease among adolescents and their parents.
      Although not linked to family meals per se, it is well-established that fast-food consumption is associated with body mass index (BMI)
      • Duffey K.J.
      • Gordon-Larsen P.
      • Jacobs Jr., D.R.
      • Williams O.D.
      • Popkin B.M.
      Differential associations of fast food and restaurant food consumption with 3-y change in body mass index: the Coronary Artery Risk Development in Young Adults Study.
      • Li F.
      • Harmer P.
      • Cardinal B.J.
      • Bosworth M.
      • Johnson-Shelton D.
      Obesity and the built environment: does the density of neighborhood fast-food outlets matter?.
      • Casey A.A.
      • Elliott M.
      • Glanz K.
      • et al.
      Impact of the food environment and physical activity environment on behaviors and weight status in rural U.S. communities.
      • Anderson B.
      • Rafferty A.P.
      • Lyon-Callo S.
      • Fussman C.
      • Imes G.
      Fast-food consumption and obesity among Michigan adults.
      • French S.A.
      • Harnack L.
      • Jeffery R.W.
      Fast food restaurant use among women in the Pound of Prevention study: dietary, behavioral and demographic correlates.
      and unhealthy diets.
      • Satia J.A.
      • Galanko J.A.
      • Siega-Riz A.M.
      Eating at fast-food restaurants is associated with dietary intake, demographic, psychosocial and behavioural factors among African Americans in North Carolina.
      The quality of home food sources depends on food preparation methods.
      • Kramer R.F.
      • Coutinho A.J.
      • Vaeth E.
      • Christiansen K.
      • Suratkar S.
      • Gittelsohn J.
      Healthier home food preparation methods and youth and caregiver psychosocial factors are associated with lower BMI in African American youth.
      Whereas some studies have shown that family meals are associated with better diet quality and healthy weight,
      • Crawford D.
      • Ball K.
      • Mishra G.
      • Salmon J.
      • Timperio A.
      Which food-related behaviours are associated with healthier intakes of fruits and vegetables among women?.
      • Neumark-Sztainer D.
      • Hannan P.J.
      • Story M.
      • Croll J.
      • Perry C.
      Family meal patterns: associations with sociodemographic characteristics and improved dietary intake among adolescents.
      • Neumark-Sztainer D.
      Eating among teens: do family mealtimes make a difference for adolescents' nutrition?.
      others suggest this may vary by sociodemographic characteristics.
      • Rollins B.Y.
      • Belue R.Z.
      • Francis L.A.
      The beneficial effect of family meals on obesity differs by race, sex, and household education: the national survey of children's health, 2003-2004.
      A recent study reported that family meals prepared by a caregiver were associated with higher BMI for African American adolescents,
      • Kramer R.F.
      • Coutinho A.J.
      • Vaeth E.
      • Christiansen K.
      • Suratkar S.
      • Gittelsohn J.
      Healthier home food preparation methods and youth and caregiver psychosocial factors are associated with lower BMI in African American youth.
      unless accompanied by healthy cooking methods. In the same study, healthier food preparation was associated with reduced adolescent obesity. In a sample of mid-life women, spending more time on home meal preparation resulted in meals with greater caloric content.
      • Chu Y.L.
      • Addo O.Y.
      • Perry C.D.
      • Sudo N.
      • Reicks M.
      Time spent in home meal preparation affects energy and food group intakes among midlife women.
      Family norms around eating with the television on are another dimension of the home food environment. Research suggests that television may contribute to obesity through 2 mechanisms: increased food intake and decreased physical activity. Studies have documented that television watching is associated with increased consumption of energy-dense foods and decreased fruit and vegetable intake for both adolescents and adults.
      • Blass E.M.
      • Anderson D.R.
      • Kirkorian H.L.
      • Pempek T.A.
      • Price I.
      • Koleini M.F.
      On the road to obesity: television viewing increases intake of high-density foods.

      Huffman FG, Vaccaro JA, Exebio JC, Zarini GG, Katz T, Dixon Z. Television watching, diet quality, and physical activity and diabetes among three ethnicities in the United States [published online ahead of print July 17, 2012]. J Environ Public Health. doi:10.1155/2012/191465.

      Finally, family support for healthy eating, or lack thereof, is associated with dietary behavior. Although findings have been inconsistent, family social support, defined as encouragement or sabotage from household members, has been shown to predict dietary behaviors.
      • Sallis J.F.
      • Grossman R.M.
      • Pinski R.B.
      • Patterson T.L.
      • Nader P.R.
      The development of scales to measure social support for diet and exercise behaviors.
      • Steptoe A.
      • Doherty S.
      • Kerry S.
      • Rink E.
      • Hilton S.
      Sociodemographic and psychological predictors of changes in dietary fat consumption in adults with high blood cholesterol following counseling in primary care.
      • Wickrama K.A.
      • Ralston P.A.
      • O'Neal C.W.
      • et al.
      Life dissatisfaction and eating behaviors among older African Americans: the protective role of social support.
      The purposes of the current article were to describe the home food environment and examine which aspects are associated with healthy eating in overweight and obese women. The study was guided by a conceptual model based on a social ecologic perspective (Figure).
      • Booth S.L.
      • Sallis J.F.
      • Ritenbaugh C.
      • et al.
      Environmental and societal factors affect food choice and physical activity: rationale, influences, and leverage points.
      • Rosenkranz R.R.
      • Dzewaltowski D.A.
      Model of the home food environment pertaining to childhood obesity.
      • Gattshall M.L.
      • Shoup J.A.
      • Marshall J.A.
      • Crane L.A.
      • Estabrooks P.A.
      Validation of a survey instrument to assess home environments for physical activity and healthy eating in overweight children.
      The guiding hypothesis was that food inventories, food placement, grocery shopping, food preparation, meal serving practices, family meals from non-home sources, television watching while eating, and family support for healthy eating would be associated with dietary behavior, operationalized as percent calories from fat and fruit and vegetable intake.
      Figure thumbnail gr1
      FigureConceptual model of home food environments.

      Methods

      Overview

      Data were from the Healthy Homes/Healthy Families study, a randomized, controlled trial testing the effectiveness of a coach-based intervention to prevent weight gain over time. Community input into study design was obtained through a community advisory board. Study participants were asked to complete baseline and 6- and 12-month follow-up telephone interviews. Data reported here are from baseline only. The study was approved by the Emory Institutional Review Board and verbal consent was obtained from all participants.

      Study Population

      Recruitment for the trial was done in partnership with 3 federally qualified health centers that serve low-income residents in southwest Georgia, with providers from 9 clinic sites referring overweight and obese women to the study. These federally qualified health centers are represented on the community advisory board. Participants were age 35–65 years, lived with at least 1 other person, and lived within 30 miles of the referring clinic. Recruitment occurred from February, 2011 to December, 2012, and baseline data were collected across all seasons. Of the 510 women enrolled, 355 (69.6%) completed baseline data collection, which involved 3 telephone interviews. Each interview lasted approximately 45 minutes, and participants received a $40 gift card for completion of baseline data survey. Interviews were conducted by trained research staff and Master of Public Health–level graduate research assistants.

      Measures

      Most of the measures were used in a pilot test of the intervention and exhibited adequate reliability in a similar population from the same region.
      • Kegler M.C.
      • Alcantara I.
      • Veluswamy J.K.
      • Haardorfer R.
      • Hotz J.A.
      • Glanz K.
      Results from an intervention to improve rural home food and physical activity environments.
      Survey instruments for the current study were pilot-tested (n = 16) and refined based on feedback.

      Food inventory

      Participants were asked about the presence of 13 fresh or frozen fruits, 17 fresh or frozen vegetables, 8 unhealthy foods, and 3 unhealthy drinks in the home over the past week.
      • Gattshall M.L.
      • Shoup J.A.
      • Marshall J.A.
      • Crane L.A.
      • Estabrooks P.A.
      Validation of a survey instrument to assess home environments for physical activity and healthy eating in overweight children.
      • Patterson R.E.
      • Kristal A.R.
      • Shannon J.
      • Hunt J.R.
      • White E.
      Using a brief household food inventory as an environmental indicator of individual dietary practices.
      A comprehensive list of items was developed from other measures, and then items that were common from earlier studies in the same region were added (eg, okra, greens and squash), and items that were ambigous in terms of their nutritional value (eg, crackers) were eliminated.
      • Kegler M.C.
      • Alcantara I.
      • Veluswamy J.K.
      • Haardorfer R.
      • Hotz J.A.
      • Glanz K.
      Results from an intervention to improve rural home food and physical activity environments.
      The inventory scores were calculated by summing the number of items present in the household. Prior studies have documented test-tetest reliability for individual food items ranging from 0.63 to 0.90.
      • Gattshall M.L.
      • Shoup J.A.
      • Marshall J.A.
      • Crane L.A.
      • Estabrooks P.A.
      Validation of a survey instrument to assess home environments for physical activity and healthy eating in overweight children.

      Food placement

      Participants were asked 3 questions about household placement of fruits, vegetables, and unhealthy snacks in their home. In yes/no format, participants were asked whether they kept these food items in the home where they were easy to see and easy to reach.
      • Gattshall M.L.
      • Shoup J.A.
      • Marshall J.A.
      • Crane L.A.
      • Estabrooks P.A.
      Validation of a survey instrument to assess home environments for physical activity and healthy eating in overweight children.
      The food placement score was calculated by reverse-coding the snack item and then summing all 3 items such that a score of 3 meant that fruit and vegetables were kept in a place where they were easy to see and easy to reach, and snacks were not. A score of 1 meant the converse. Test-retest reliability ranged from 0.50 to 0.60 for items in the original measure.
      • Gattshall M.L.
      • Shoup J.A.
      • Marshall J.A.
      • Crane L.A.
      • Estabrooks P.A.
      Validation of a survey instrument to assess home environments for physical activity and healthy eating in overweight children.

      Grocery shopping

      Participants were asked how often they or the primary food shopper bought fresh vegetables and fresh fruit when they went grocery shopping in the past month. For the regression model, the authors calculated the maximum shopping frequency for the 2 items.

      Food preparation and meal serving practices

      Food preparation was assessed through 15 items that asked how often in the past month participants served healthier food options or prepared foods using healthy cooking methods.
      • Spurrier N.J.
      • Magarey A.A.
      • Golley R.
      • Curnow F.
      • Sawyer M.G.
      Relationships between the home environment and physical activity and dietary patterns of preschool children: a cross-sectional study.
      • Kristal A.R.
      • Shattuck A.L.
      • Patterson R.E.
      Differences in fat-related dietary patterns between black, Hispanic and White women: results from the Women's Health Trial Feasibility Study in Minority Populations.
      Prior studies documented Cronbach alpha ranging from .55 to .82
      • Kegler M.C.
      • Alcantara I.
      • Veluswamy J.K.
      • Haardorfer R.
      • Hotz J.A.
      • Glanz K.
      Results from an intervention to improve rural home food and physical activity environments.
      • Kristal A.R.
      • Shattuck A.L.
      • Patterson R.E.
      Differences in fat-related dietary patterns between black, Hispanic and White women: results from the Women's Health Trial Feasibility Study in Minority Populations.
      ; it was .64 in the current study. Meal-serving practices focused on strategies with potential to decrease portion size, including using smaller plates, serving smaller amounts of food, and not serving food family style. Both scores are the means of the items.

      Non-home food source

      Participants were asked to assess the number of days in the past week they purchased family meals from a fast-food restaurant, full-service or sit-down restaurant, takeout, and delivery.
      • Fulkerson J.A.
      • Story M.
      • Neumark-Sztainer D.
      • Rydell S.
      Family meals: perceptions of benefits and challenges among parents of 8- to 10-year-old children.

      Television while eating

      Participants were asked how often with their families they ate family evening meals, other meals, and snacks in front of the television.
      • Spurrier N.J.
      • Magarey A.A.
      • Golley R.
      • Curnow F.
      • Sawyer M.G.
      Relationships between the home environment and physical activity and dietary patterns of preschool children: a cross-sectional study.
      Response options ranged from 1 = “never” to 4 = “very often.” The score was calculated as the mean of the 3 items.

      Family support

      Family support for eating healthy was measured using 6 items adapted from Sallis et al
      • Sallis J.F.
      • Grossman R.M.
      • Pinski R.B.
      • Patterson T.L.
      • Nader P.R.
      The development of scales to measure social support for diet and exercise behaviors.
      and 2 new items. Participants were asked how often in the past month others in their household encouraged them to avoid unhealthy foods, reminded them to eat fruits and vegetables, and ate high-fat or high-salt foods in front of them, among other behaviors. The score was calculated as the mean of the items after reverse-coding negative items. Cronbach alpha was .70. Prior studies have documented Cronbach alpha ranging from .45 to .52.
      • Sallis J.F.
      • Grossman R.M.
      • Pinski R.B.
      • Patterson T.L.
      • Nader P.R.
      The development of scales to measure social support for diet and exercise behaviors.
      • Kegler M.C.
      • Alcantara I.
      • Veluswamy J.K.
      • Haardorfer R.
      • Hotz J.A.
      • Glanz K.
      Results from an intervention to improve rural home food and physical activity environments.

      Fruit and vegetable intake

      Usual fruit and vegetable intake was assessed using 6 items from the 2005 Behavioral Risk Factor Surveillance System and scored according to the Behavioral Risk Factor Surveillance System guidelines.
      Centers for Disease Control and Prevention (CDC)
      Behavioral Risk Factor Surveillance System Survey Questionnaire.
      Prior research has shown strong validity for this measure.
      • Resnicow K.
      • Odom E.
      • Wang T.
      • et al.
      Validation of three food frequency questionnaires and 24-hour recalls with serum carotenoid levels in a sample of African-American adults.

      Fat intake

      The National Cancer Institute Quick Food Scan (Fat Screener) was used to assess percentage of calories from fat based on eating habits over the past year.
      • Thompson F.E.
      • Midthune D.
      • Subar A.F.
      • Kahle L.L.
      • Schatzkin A.
      • Kipnis V.
      Performance of a short tool to assess dietary intakes of fruits and vegetables, percentage energy from fat and fibre.
      For each participant, a percentage of daily calories from fat was calculated using the National Cancer Institute–provided scoring guidelines. This item has adequate validity, with correlations ranging from r = 0.36 to r = 0.77 compared with 24-hour dietary recall data.
      • Thompson F.E.
      • Midthune D.
      • Subar A.F.
      • Kahle L.L.
      • Schatzkin A.
      • Kipnis V.
      Performance of a short tool to assess dietary intakes of fruits and vegetables, percentage energy from fat and fibre.

      Demographics

      Participants were asked questions regarding their age, gender, race/ethnicity, marital status, annual household income, education, employment status, number of adults and children in the home, and neighborhood type (eg, in town or a house in the country with few neighbors close by).
      • Kegler M.C.
      • Alcantara I.
      • Veluswamy J.K.
      • Haardorfer R.
      • Hotz J.A.
      • Glanz K.
      Results from an intervention to improve rural home food and physical activity environments.
      Centers for Disease Control and Prevention (CDC)
      Behavioral Risk Factor Surveillance System Survey Questionnaire.
      Participants were also asked their height and weight for calculation of BMI.

      Data Analysis

      Normality of outcome variables was assessed. Both fruit and vegetable intake and percentage of fat intake were distributed normally. Univariate and bivariate descriptives for all variables were investigated, as well as multicollinearity. The researchers conducted multivariate regression models with fruit and vegetable intake as well as percentage of calories from fat intake as continuous outcomes. Variable inclusion was based on the conceptual model. Demographic variables were included as control variables because of their potential associations with the dependent variables of interest. Data were analyzed using SAS 9.3 (SAS Institute, Cary, NC, 2011).

      Results

      Description of Study Participants

      The vast majority of participants were African American (83.7%), almost half the sample was unemployed, and two thirds reported an annual household income < $25,000 (Table 1). More than half of the women were not married (59.6%). Household sizes varied, but most women lived with 1 other adult (52.8%) and at least 1 child (50.3%). The average BMI was 38.4 (SD, 8.63). The women consumed an average of 2.8 servings of fruits and vegetables per day (SD, 1.81) and 33.1% of their caloric intake came from fat (SD, 4.22).
      Table 1Demographic and Nutrition Behaviors of Study Participants (n = 319)
      n%
      Age, y
       35–449329.2
       45–5412238.2
       55–6510432.6
      Race
       White4915.4
       African American/black26783.7
       Other30.9
      Employment
       Unemployed15849.5
       Retired216.6
       Part-time3210.0
       Full-time10833.9
      Income
       ≤ $10,00010532.9
       $10,001–$25,00010833.9
       $25,001–$50,0007423.2
       > $50,000268.2
      Marital status
       Married12940.4
       Not married, but living with partner237.2
       Widowed154.7
       Separated3210.0
       Divorced4815.1
       Not married7222.6
      Neighborhood type
       In town16050.2
       In country or rural area, with neighbors close by13642.6
       House in country with few neighbors close by237.2
      Additional adults in household
       None3310.4
       1 person16852.8
       2 people7924.8
       3 people288.8
       ≥ 4 people103.1
      Children in household
       None15849.7
       1 child8526.7
       2 children4815.1
       3 children165.0
       ≥ 4 children113.5
      Body mass index and eating behaviors (mean [SD])
       Body mass index38.48.63
       Fruit and vegetable intake (servings/d)2.81.81
       Fat intake (% calories from fat)33.14.22
      Note: Percentages might not add up to 100% owing to rounding or refusal to answer.

      Home Food Environment

      When asked about household food inventories within the past week, women reported an average of 14 types of fruits and vegetables in their home (SD, 5.00) (Table 2). Most commonly, people had bananas (64.9%), oranges or tangerines (55.8%), and apples (53.3%) in their fruit inventories. For vegetables, onions (90.9%) and peas, beans, or green beans (89.0%) were mentioned most often. Participants reported 4.6 unhealthy foods in the home during the past week (SD, 1.77) on average and 1.8 unhealthy beverage items (SD, 0.95). Unhealthy drinks most often reported were sugared drinks other than soft drinks such as sweet tea (68.3%), followed by regular soft drinks (64.3%). A large majority reported keeping fruits (92.2%) as well vegetables (88.7%) in a place where they were easy to see and easy to reach. Almost two thirds of women reported having high-calorie snack foods in visible locations.
      Table 2Home Food Inventories and Food Placement in Study Participant Households (n = 319)
      Fruit and Vegetable Inventory
      Fruit and vegetables score (out of 32)14.0(5.00)
      Fruit, n (%)
       Bananas207(64.9)
       Oranges or tangerines178(55.8)
       Apples170(53.3)
       Grapes157(49.2)
       Peaches126(39.5)
       Strawberries119(37.3)
       Pineapples80(25.1)
       Grapefruit73(22.9)
       Cantaloupes or melons64(20.1)
       Watermelons60(18.8)
       Pears54(16.9)
       Blueberries49(15.4)
       Mangos32(10.1)
      Vegetables, n (%)
       Onions290(90.9)
       Peas, beans, or green beans284(89.0)
       Potatoes, not french fries251(78.7)
       Corn243(76.2)
       Greens237(74.3)
       Lettuce235(73.7)
       Tomatoes233(73.0)
       Bell peppers188(58.9)
       Carrots174(54.6)
       Broccoli161(50.5)
       Cabbage155(49.0)
       Okra155(48.6)
       Celery138(43.3)
       Cucumbers135(42.3)
       Squash87(27.3)
       Cauliflower50(15.7)
       Asparagus14(4.4)
      Unhealthy foods inventory, mean (SD)
       Unhealthy foods score (out of 8)4.6(1.77)
      Unhealthy foods, n (%)
       Bacon/sausage277(86.8)
       Cookies, cakes248(77.7)
       Hot dogs210(65.8)
       Candy bars204(64.0)
       Regular potato chips197(61.8)
       Ice cream152(47.7)
       Salted nuts115(36.1)
       Pork rinds63(19.8)
      Unhealthy drinks inventory, mean (SD)
       Unhealthy drinks score (out of 3)1.8(0.95)
      Unhealthy drinks, n (%)
       Sugared drinks other than soft drinks218(68.3)
       Regular soft drinks205(64.3)
       Regular whole milk157(49.2)
      Food placement, mean (SD)
       Food placement score (out of 3)2.2(0.63)
      Items placed easy to see/easy to reach, n (%)
       Fruit294(92.2)
       Vegetables283(88.7)
       Unhealthy snacks200(62.7)
      Note: Food placement refers to whether fruits, vegetables, and unhealthy snacks were kept where they were easy to see and easy to reach.
      n indicates number of study participants.
      Table 3 lists household food practices. Participants reported grocery shopping for fruits slightly more frequently (mean, 1.0; SD, 1.14) than for vegetables (mean, 0.9; SD, 1.06). The healthy food preparation score was on average 2.2 (SD, 0.45), indicating that they used healthy food preparation methods occasionally; the meal serving practices score was on average 2.5 (SD, 0.65) which meant that they used healthy meal serving practices midway between occasionally and often. Participants reported serving family meals from non-home sources 2.6 days per week on average, with large variation in behavior (SD, 3.14). Most often, those meals came from fast-food restaurants (mean, 1.3; SD, 1.58) or takeout (mean, 0.7; SD, 1.25). When asked how regularly their families ate in front of the television with the television on, the average score for evening meals was 2.8, for other meals, 2.6 (SD, 1.14), and for snacks, 2.7 (SD, 1.06). A score of 2 means occasionally and a score of 3 means often. Family support for healthy eating had a mean of 2.5 (SD, 0.55), with both negative and positive support items scoring relatively low.
      Table 3Household Food Practices and Family Social Support Among Study Participants (n = 319)
      Household food practiceMeanSDMedian
      Grocery shopping for fruits or vegetables1.11.15
       Shopping for fruits1.01.140.7
       Shopping for vegetables0.91.060.7
      Meal preparation
      Mean of items with negative behaviors reverse-coded.
      2.20.45
       Cook with steamer1.30.74
       Cook with grill1.90.97
       Use nonstick pan and no grease2.01.12
       Broil/bake meat/fish2.70.94
       Use spices on vegetables instead of oil, butter, or fat2.21.07
       Serve fried fish or fried chicken2.00.98
       Serve fried vegetables like okra or french fries1.80.97
       Buy skinless chicken or take skin off chicken2.21.15
       Buy lean meat or trim fat from meat before cooking2.51.09
       Serve 1% or skim milk4.716.27
       Serve nonfat ice cream, frozen, yogurt, or sherbet3.112.24
       Use low-calorie or diet salad dressings3.010.96
       Use low-fat or nonfat mayonnaise4.917.97
       Serve fruit for dessert2.00.95
       Serve fruit/vegetables for snack2.30.96
      Meal serving practices
      Mean of items with negative behaviors reverse-coded.
      2.50.65
       Use smaller plates when serving meals2.01.06
       Serve smaller amounts of food than usual2.11.01
       Serve meals family style with serving dishes on table1.81.06
      Family meal from non-home sources (frequency per wk)
      Sum of items
      2.63.14
       Fast food1.31.58
       Sit-down restaurant0.51.04
       Takeout0.71.25
       Delivery0.10.29
      Television while eating score
      Mean of items
      2.70.97
       Evening meals with television2.81.14
       Other meals with television2.61.14
       Snacks with television2.71.06
      Family support scale2.50.55
       During the past month, how often did people living in your household do or say the following:
      Encourage you to avoid unhealthy foods1.81.06
      Discuss your eating habits with you1.81.05
      Remind you to eat fruits and vegetables1.81.07
      Eat fruits and vegetables for snacks2.31.06
      Remind you not to eat high-fat, high-salt foods2.01.11
      Eat high-fat or high-salt foods in front of you2.01.02
      Bring home foods you are trying not to eat1.70.96
      Get angry when you encouraged them to eat healthy foods1.60.96
      Offer you food you are trying not to eat1.50.83
      Note: 1 = never/rarely, 2 = occasionally, 3 = often, and 4 = very often.
      a Sum of items
      b Mean of items
      c Mean of items with negative behaviors reverse-coded.

      Multivariate Regression Models

      Table 4 reports results from the multivariate regression analysis investigating the impact of the home food environment on fruit and vegetable intake and percentage of calories from fat intake. Having a higher number of fruits and vegetables in the home was predictive of higher fruit and vegetable intake (β = 0.11; SE, 0.02; P < .001). Similarly, a high frequency of fruit and vegetable shopping per week was associated with a higher fruit and vegetable intake (β = 0.29; SE, 0.08; P < .001). There was no significant association between fruit and vegetable intake and the unhealthy food and drinks inventories, food placement, meal preparation, and serving methods, or with the number of family meals from outside the home, eating with the television on, or social support for healthy eating. The model for fruit and vegetable intake was statistically significant (P < .001) and explained 27.9% of variance in fruit and vegetable intake.
      Table 4Multivariate Models of Dimensions of Home Food Environment Associated With Fruit and Vegetable Intake and Percent Calories From Fat
      VariableFruit and Vegetable IntakeCalories From Fat Intake, %
      βSEPβSEP
       Intercept1.041.14.3640.582.85< .001
       Fruit and vegetable inventory0.110.02< .001−0.080.06.15
       Unhealthy food inventory0.100.06.110.450.15.01
       Unhealthy drinks inventory−0.190.11.09−0.110.28.70
       Food placement−0.100.17.56−0.630.42.14
       Fruit or vegetable shopping0.290.08.01−0.100.21.63
       Meal preparation0.430.26.10−2.060.65.01
       Meal serving0.210.15.16−0.510.38.19
       Family meal purchased from non-home sources, times/wk0.020.03.60−0.030.08.66
       Eating with television on−0.160.10.130.240.26.36
       Family support healthy eating0.280.18.120.140.46.76
      Model
      r227.9%17.9%
      P< .001< .001
      Note: Regression analysis was adjusted for demographic differences in race, age, employment status, income, marital status, having children in the home or not, and having other adults in the home or not.
      The number of unhealthy food items in the home was positively associated with fat intake (β = 0.45; SE, 0.15; P < .001). Healthy meal preparation was negatively associated with fat intake (β = −2.06; SE, 0.65; P < .01), indicating the people who used healthier methods to prepare meals had lower intake of fat. None of the other home environment domains were associated with fat intake. The fat intake model explained almost 18% of the variance in percentage of calories from fat.

      Discussion

      This study is 1 of the first to examine the influence of the home food environment on healthy eating among overweight and obese low-income women. Study participants were largely African American and lived in the rural south. Prior research on home food environments has tended to focus on youth and their parents, often in urban or suburban settings with less poverty than is present in rural Georgia. Thus, the current study provides insight into the association between the home food environment and healthy eating in a high-risk population for obesity and associated chronic diseases.
      Of note, among the physical aspects of the home environment, participants reported a wide range of fruits and vegetables available in their homes. Interestingly, a study of the home environment among a largely white population in Rhode Island documented 7.2 fruits and vegetables, whereas the current study documented 14 types.
      • Gorin A.A.
      • Phelan S.
      • Raynor H.
      • Wing R.R.
      Home food and exercise environments of normal-weight and overweight adults.
      This difference may be regional, cultural, or an artifact of measurement approaches, because the current study asked about a larger number of fruits and vegetables. Similar to other studies, the current study found that having more fruits and vegetables in the home was associated with higher levels of fruit and vegetable intake.
      • Larson N.
      • Laska M.N.
      • Story M.
      • Neumark-Sztainer D.
      Predictors of fruit and vegetable intake in young adulthood.
      Although participants reported a variety of fruits and vegetables available in their home, they also had a significant number of unhealthy snack and drink options. This study found higher levels of high-fat snacks in the home than did the study of Gorin et al
      • Gorin A.A.
      • Phelan S.
      • Raynor H.
      • Wing R.R.
      Home food and exercise environments of normal-weight and overweight adults.
      (4.6 vs 3.7), although the current study asked about a larger number of items. Similar to other studies, the current study observed that the availability of high-fat snacks in the home was associated with fat intake.
      • Gattshall M.L.
      • Shoup J.A.
      • Marshall J.A.
      • Crane L.A.
      • Estabrooks P.A.
      Validation of a survey instrument to assess home environments for physical activity and healthy eating in overweight children.
      • Patterson R.E.
      • Kristal A.R.
      • Shannon J.
      • Hunt J.R.
      • White E.
      Using a brief household food inventory as an environmental indicator of individual dietary practices.
      • Hermstad A.K.
      • Swan D.W.
      • Kegler M.C.
      • Barnette J.K.
      • Glanz K.
      Individual and environmental correlates of dietary fat intake in rural communities: a structural equation model analysis.
      Only 1 other study has assessed whether food accessibility in the home (eg, ease of access) is associated with eating behavior among adults. Gattshall et al
      • Gattshall M.L.
      • Shoup J.A.
      • Marshall J.A.
      • Crane L.A.
      • Estabrooks P.A.
      Validation of a survey instrument to assess home environments for physical activity and healthy eating in overweight children.
      found that fruit and vegetable accessibility was correlated with fruit consumption for youth. Participants in the current study reported that both healthy foods and unhealthy foods were easily accessible in their homes; however, accessibility was not associated with eating behavior in study participants.
      The high reporting of produce shopping per week was encouraging. Participants reported shopping for fruits and vegetables about once per week. A study of food purchasing in the Mississippi Delta reported that participants shopped for fruits and vegetables about 2 times a week,
      • McGee B.B.
      • Johnson G.S.
      • Yadrick M.K.
      • et al.
      Food shopping perceptions, behaviors, and ability to purchase healthful food items in the lower Mississippi delta.
      whereas a study of Supplemental Nutrition Assistance Program recipients in North Carolina found that only 30.6% reported shopping at a supermarket once a week or more.
      • Jilcott S.B.
      • Moore J.B.
      • Wall-Bassett E.D.
      • Liu H.
      • Saelens B.E.
      Association between travel times and food procurement practices among female supplemental nutrition assistance program participants in eastern North Carolina.
      Grocery shopping is clearly an important decision point for healthy eating, although it is affected by a broad range of factors such as household income, price of foods, and location of food stores.
      • McGee B.B.
      • Johnson G.S.
      • Yadrick M.K.
      • et al.
      Food shopping perceptions, behaviors, and ability to purchase healthful food items in the lower Mississippi delta.
      • Wiig K.
      • Smith C.
      The art of grocery shopping on a food stamp budget: factors influencing the food choices of low-income women as they try to make ends meet.
      Because non-home food sources tend to be more caloric than foods prepared at home, a healthier home food environment is characterized by relatively few family meals from non-home sources.

      Lin B-H, Guthrie J. Nutritional Quality of Food Prepared at Home and Away From Home, 1977–2008. Washington, DC: United States Department of Agriculture, Economic Research Service; December 2012. http://www.ers.usda.gov/publications/eib-economic-information-bulletin/eib105.aspx#.UvKS0PldXE0. Accessed February 5, 2014.

      • Bowman S.A.
      • Vinyard B.T.
      Fast food consumption of U.S. adults: impact on energy and nutrient intakes and overweight status.
      Study participants indicated that they frequently used non-home food sources for family meals, about 2.6 d/wk, with 69.3% purchasing a family meal at least once per week. This is comparable to, or even higher than, finding from other studies, for example, Fulkerson et al
      • Fulkerson J.A.
      • Farbakhsh K.
      • Lytle L.
      • et al.
      Away-from-home family dinner sources and associations with weight status, body composition, and related biomarkers of chronic disease among adolescents and their parents.
      reported that 50% of families purchased family meals from non-home sources at least once per week. Home cooking, although often healthier than non-home sources, must be accompanied by healthy food preparation methods.
      • Chu Y.L.
      • Addo O.Y.
      • Perry C.D.
      • Sudo N.
      • Reicks M.
      Time spent in home meal preparation affects energy and food group intakes among midlife women.
      In the current study, healthier food preparation methods were associated with lower fat intake.
      Another finding was that eating with the television on was common, with the majority reporting that their families occasionally or often eat meals and snacks in front of the television. Numerous studies have documented that television watching is associated with unhealthy diets.
      • Blass E.M.
      • Anderson D.R.
      • Kirkorian H.L.
      • Pempek T.A.
      • Price I.
      • Koleini M.F.
      On the road to obesity: television viewing increases intake of high-density foods.

      Huffman FG, Vaccaro JA, Exebio JC, Zarini GG, Katz T, Dixon Z. Television watching, diet quality, and physical activity and diabetes among three ethnicities in the United States [published online ahead of print July 17, 2012]. J Environ Public Health. doi:10.1155/2012/191465.

      Contrary to expectations, there was no association between eating in front of the television and either of the dietary behaviors assessed. Similarly, there was no association between family support for healthy eating and dietary behavior.
      Despite the strengths of this study, a few limitations should be noted. First, most of the data were self-reported via telephone interviews and could be subject to recall or social desirability bias. Second, the ability to detect associations was dampened by the lack of variability in socioeconomic and weight status among participants. Indeed, this lack of variation in weight status as well as eating behavior may explain the lack of associations observed for many of the home environment variables. Only 3 dimensions of the home environment were associating with eating behaviors in this study: food inventories, grocery shopping, and meal preparation. With a more diverse study population, more associations among the constructs in the conceptual model would be anticipated. There was, however, considerable variability in some of the home environment domains. Fourth, data were cross-sectional and causality could not be examined. Finally, several of the measures have had modest reliability and/or validity in prior studies, which suggests that additional measurement research in this area may be warranted.
      • Gattshall M.L.
      • Shoup J.A.
      • Marshall J.A.
      • Crane L.A.
      • Estabrooks P.A.
      Validation of a survey instrument to assess home environments for physical activity and healthy eating in overweight children.
      • Kegler M.C.
      • Alcantara I.
      • Veluswamy J.K.
      • Haardorfer R.
      • Hotz J.A.
      • Glanz K.
      Results from an intervention to improve rural home food and physical activity environments.
      • Kristal A.R.
      • Shattuck A.L.
      • Patterson R.E.
      Differences in fat-related dietary patterns between black, Hispanic and White women: results from the Women's Health Trial Feasibility Study in Minority Populations.
      • Thompson F.E.
      • Midthune D.
      • Subar A.F.
      • Kahle L.L.
      • Schatzkin A.
      • Kipnis V.
      Performance of a short tool to assess dietary intakes of fruits and vegetables, percentage energy from fat and fibre.

      Implications for Research and Practice

      The study highlights some common conditions that likely contribute to obesity in South Georgia: plentiful high-sugar beverages and high-fat snacks, family norms for eating in front of the television, and a substantial proportion of family meals from non-home sources. Although availability of fruits and vegetables was good, local traditions involve preparing these foods in non-healthful ways. Eating in front of the television was common, and changing that behavior is particularly challenging when working with individuals who are unemployed and who consequently spend a lot of time at home.
      The women in this study were primarily obese, African American, unemployed, and low-income. There are likely additional psychosocial and environmental factors that promote and inhibit healthy eating in this population. Future research should question the intensity of social support needed to change the home environment and explore who is most effective in providing such support. Future studies should also consider use of a social ecologic perspective to examine multiple behavior settings simultaneously, such as neighborhoods, workplaces, and faith-based organizations, in addition to homes. The ways in which Supplemental Nutrition Assistance Program participation and food insecurity may affect home food environments and eating behaviors may also be an important line of inquiry. Finally, studies should examine the home food environment among a range of communities and population groups to more deeply understand its role in promoting healthy eating among adults.

      Acknowledgments

      This publication was supported by Cooperative Agreement 5U48DP001909 from the Centers for Disease Control and Prevention. The findings and conclusions in this article are those of the authors and do not necessarily represent the official position of the Centers for Disease Control and Prevention. The authors thank members of the Emory Prevention Research Center's Community Advisory Board for guidance in the design and implementation of this research. They also thank the interviewers, study participants, and Community Health Center partners for their valuable contributions to this research.

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