title: Factors affecting food choices of older adults from high and low socioeconomic groups: a discrete choice experiment.
abstract: BACKGROUND
  Healthiness, price, and convenience are typically indicated as important motives for food choices; however, it is largely unknown to what extent older adults from high and low socioeconomic groups differ in these underlying motives. A discrete choice experiment (DCE) is an innovative way to elicit implicit motives for food choices.
  
  
  OBJECTIVE
  The aim was to investigate differences in food motives between socioeconomic groups by means of a DCE.
  
  
  METHODS
  A DCE was carried out during a face-to-face interview among older adults as part of the Health and Living Conditions in Eindhoven and surrounding cities (GLOBE) cohort study, The Netherlands. Participants (n = 399; mean age: 63.3 y) were offered a series of choice sets about a usual dinner at home and were asked to choose in each choice set between 2 meals and an opt-out choice, with different combinations of attribute levels. We included 5 meal attributes (taste, healthiness, preparation time, travel time to shops, and price) and 3 or 4 levels for each attribute. Data were analyzed by multinomial logit models.
  
  
  RESULTS
  Healthiness, taste, price, and travel time to the grocery store proved to significantly influence older adults' meal decisions; preparation time was not significant. Healthiness was the most important attribute for all of the participants. More highly educated participants rated a healthy and less expensive meal to be more important than did less educated participants. Those with a high income rated a meal that was healthy and very tasteful to be more important than did those with a lower income.
  
  
  CONCLUSIONS
  Healthiness, taste, price, and travel time to grocery shops influenced older adults' meal decisions. Higher socioeconomic groups valued health more than did lower socioeconomic groups. DCEs represent a promising method to gain insight into the relative importance of motives for food choices. This trial was registered at www.isrctn.com as ISRCTN60293770.
authors.affiliation: From the Department of Public Health, Erasmus University Medical Centre, Rotterdam, The Netherlands.
authors.forename: Carlijn B M
authors.initials: CB
authors.lastname: Kamphuis
authors.affiliation: From the Department of Public Health, Erasmus University Medical Centre, Rotterdam, The Netherlands.
authors.forename: Esther W
authors.initials: EW
authors.lastname: de Bekker-Grob
authors.affiliation: From the Department of Public Health, Erasmus University Medical Centre, Rotterdam, The Netherlands.
authors.forename: Frank J
authors.initials: FJ
authors.lastname: van Lenthe
mesh_terms: D000368:Aged; D002755:Choice Behavior; D015331:Cohort Studies; D005260:Female; D005518:Food Preferences; D058870:Food, Organic / Q000191:economics; D006801:Humans; D008297:Male; D062407:Meals; D008875:Middle Aged; D009042:Motivation; D009426:Netherlands; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D013649:Taste
keywords: DCE; food; food attributes; motives; older adults; socioeconomic position