title: Food prices and food shopping decisions of black women.
abstract: Identifying food pricing strategies to encourage purchases of lower-calorie food products may be particularly important for black Americans. Black children and adults have higher than average obesity prevalence and disproportionate exposure to food marketing environments in which high calorie foods are readily available and heavily promoted. The main objective of this study was to characterize effects of price on food purchases of black female household shoppers in conjunction with other key decision attributes (calorie content/healthfulness, package size, and convenience). Factorial discrete choice experiments were conducted with 65 low- and middle-/higher-income black women. The within-subject study design assessed responses to hypothetical scenarios for purchasing frozen vegetables, bread, chips, soda, fruit drinks, chicken, and cheese. Linear models were used to estimate the effects of price, calorie level (or healthfulness for bread), package size, and convenience on the propensity to purchase items. Moderating effects of demographic and personal characteristics were assessed. Compared with a price that was 35% lower, the regular price was associated with a lesser propensity to purchase foods in all categories (β = -0.33 to -0.82 points on a 1 to 5 scale). Other attributes, primarily calorie content/healthfulness, were more influential than price for four of seven foods. The moderating variable most often associated with propensity to pay the regular versus lower price was the reported use of nutrition labels. Price reductions alone may increase purchases of certain lower-calorie or more healthful foods by black female shoppers. In other cases, effects may depend on combining price changes with nutrition education or improvements in other valued attributes.
authors.affiliation: Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, 423 Guardian Drive, 8th Floor Blockley Hall, Philadelphia, PA 19104, USA.
authors.forename: Katherine I
authors.initials: KI
authors.lastname: DiSantis
authors.affiliation: Department of Marketing, Kogod School of Business, American University, 4400 Massachusetts Avenue, NW, Washington, DC, WA 20016-8044, USA.
authors.forename: Sonya A
authors.initials: SA
authors.lastname: Grier
authors.affiliation: Division of Epidemiology, University of Minnesota School of Public Health, West Bank Office Building, 1300 S. Second Street, Suite 300, Minneapolis, MN 55454-1015, USA.
authors.forename: J Michael
authors.initials: JM
authors.lastname: Oakes
authors.affiliation: Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, 423 Guardian Drive, 8th Floor Blockley Hall, Philadelphia, PA 19104, USA. Electronic address: skumanyi@mail.med.upenn.edu.
authors.forename: Shiriki K
authors.initials: SK
authors.lastname: Kumanyika
mesh_terms: D000328:Adult; D001741:Black or African American; D002755:Choice Behavior; D003132:Commerce; D004032:Diet / Q000191:economics*; D002149:Energy Intake; D005191:Family Characteristics; D005260:Female; D005515:Food Labeling; D006262:Health; D006801:Humans; D007182:Income; D008875:Middle Aged; D009753:Nutritive Value; D009765:Obesity / Q000191:economics / Q000209:etiology; D014930:Women
keywords: African American; Food prices; Food shopping; Obesity