title: Body mass index and dietary intake among Head Start children and caregivers.
abstract: BACKGROUND
  The US Head Start program serves low-income preschoolers and their caregivers and provides an opportunity for assessment and intervention on obesity. We sought to determine the prevalence of obesity among children and their caregivers and to identify variables that are associated with child body mass index (BMI) z scores and caregiver BMI.
  
  
  METHODS
  Cross-sectional data on diet and BMI from 770 caregiver-child dyads recruited from 57 Head Start centers in Alabama and Texas.
  
  
  METHODS
  Height and weight of each caregiver and child were measured using standardized protocols. Dietary intakes of caregiver-child dyads were collected using three 24-hour dietary recalls and Block food frequency questionnaires. Data were collected between September 2004 and November 2005. The larger Food Pyramid categories were divided into 17 food consumption groups and tested for their association with child BMI z scores. Analysis of variance was used to test if food groups were significantly associated with child BMI z score.
  
  
  RESULTS
  The prevalence of obesity among children was 18.4%, 24.3%, and 37.3% among black, Hispanic, and white children, respectively (P<0.0001), whereas it was 58.3%, 41.4%, and 41.6% among black, Hispanic, and white caregivers, respectively (P<0.0001). Child BMI z scores and caregiver BMIs were correlated (r=0.16, P<0.0001). In multivariable models, children were 1.90 (95% confidence interval 1.31-2.74) times more likely to have BMI ≥95th percentile if their caregiver was obese. Five variables (fruits, unsweetened beverages, low-fat dairy, race, and caregiver's BMI) were significantly associated with child BMI z scores. Fruits were inversely related, whereas unsweetened beverages, low-fat dairy, and caregiver's BMI were positively associated with child BMI z score (P<0.03). Compared to whites, black and Hispanic children had lower BMI z scores (P<0.05).
  
  
  CONCLUSIONS
  The high prevalence of obesity in this population together with the observed inverse association between fruit consumption and BMI, if replicated in other studies, suggests that interventions that promote fruit consumption could have beneficial effects on child BMI.
authors.affiliation: University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA.
authors.forename: Krishna
authors.initials: K
authors.lastname: Acharya
authors.forename: Michelle
authors.initials: M
authors.lastname: Feese
authors.forename: Frank
authors.initials: F
authors.lastname: Franklin
authors.forename: Edmond K
authors.initials: EK
authors.lastname: Kabagambe
mesh_terms: D000328:Adult; D001741:Black or African American / Q000706:statistics & numerical data; D000407:Alabama / Q000453:epidemiology; D015992:Body Mass Index; D017028:Caregivers / Q000706:statistics & numerical data*; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D004032:Diet / Q000191:economics / Q000706:statistics & numerical data*; D018479:Early Intervention, Educational / Q000706:statistics & numerical data*; D005260:Female; D005638:Fruit; D006630:Hispanic or Latino / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D009765:Obesity / Q000453:epidemiology* / Q000517:prevention & control; D013781:Texas / Q000453:epidemiology; D044465:White People / Q000706:statistics & numerical data