title: A randomized controlled study of a healthy corner store initiative on the purchases of urban, low-income youth.
abstract: OBJECTIVE
  Although many initiatives exist to improve the availability of healthy foods in corner stores, few randomized trials have assessed their effects. This study evaluated, in a randomized controlled trial, the effects of a first-generation healthy corner store intervention on students' food and beverage purchases over a 2-year period.
  
  
  METHODS
  Participants (n = 767) were fourth-, fifth-, and sixth-grade students. Ten schools and their nearby corner stores (n = 24) were randomly assigned to the healthy corner store intervention or an assessment-only control. Intercept surveys directly assessed the nutritional characteristics of students' corner store purchases at baseline, 1 and 2 years. Students' weight and heights were measured at baseline, 1 and 2 years.
  
  
  RESULTS
  There were no differences in energy content per intercept purchased from control or intervention schools at year 1 (P = 0.12) or 2 (P = 0.58). There were no differences between control and intervention students in BMI z score (year 1, P = 0.83; year 2, P = 0. 98) or obesity prevalence (year 1, P = 0.96; year 2, P = 0.58).
  
  
  CONCLUSIONS
  A healthy corner store initiative did not result in significant changes in the energy content of corner store purchases or in continuous or categorical measures of obesity. These data will help to inform future interventions.
authors.affiliation: Center for Obesity Research and Education, Temple University, Philadelphia, Pennsylvania, USA.
authors.forename: Michelle R
authors.initials: MR
authors.lastname: Lent
authors.forename: Stephanie S
authors.initials: SS
authors.lastname: Vander Veur
authors.forename: Tara A
authors.initials: TA
authors.lastname: McCoy
authors.forename: Alexis C
authors.initials: AC
authors.lastname: Wojtanowski
authors.forename: Brianna
authors.initials: B
authors.lastname: Sandoval
authors.forename: Sandy
authors.initials: S
authors.lastname: Sherman
authors.forename: Eugene
authors.initials: E
authors.lastname: Komaroff
authors.forename: Gary D
authors.initials: GD
authors.lastname: Foster
mesh_terms: D000367:Age Factors; D001827:Body Height; D001835:Body Weight; D002648:Child; D005260:Female; D005518:Food Preferences / Q000523:psychology*; D005523:Food Supply / Q000145:classification* / Q000191:economics; D058870:Food, Organic / Q000191:economics / Q000706:statistics & numerical data*; D006293:Health Promotion / Q000639:trends*; D006801:Humans; D008297:Male; D009765:Obesity / Q000453:epidemiology / Q000517:prevention & control; D011203:Poverty; D015995:Prevalence; D012111:Residence Characteristics; D012574:Schools; D012923:Social Class; D013334:Students; D014505:Urban Population