J. O'Loughlin et al., One- and two-year predictors of excess weight gain among elementary schoolchildren in multiethnic, low-income, inner-city neighborhoods, AM J EPIDEM, 152(8), 2000, pp. 739-746
Citations number
43
Categorie Soggetti
Envirnomentale Medicine & Public Health","Medical Research General Topics
Longitudinal studies are needed to increase understanding of the causes of
childhood obesity. To identify 1-and 2-year predictors of excess weight gai
n among preadolescents, the authors conducted a prospective cohort study of
fourth- and fifth-grade students in 16 elementary schools located in multi
ethnic, low-income neighborhoods in Montreal, Quebec, Canada, that were par
ticipating in the evaluation of a school-based heart health promotion progr
am. Subjects included 2,318 children aged 9-12 years with baseline and 1-ye
ar follow-up data and 633 children aged 9-11 years with baseline and 2-year
follow-up data. One-year predictors of highest docile of change in body ma
ss index (BMI) identified in logistic regression analyses included baseline
BMI of 90th percentile or more (odds ratio (OR) = 2.66, 95% confidence int
erval: 1.80, 3.94) in boys and baseline BMI of 90th percentile or more (OR
= 2.34, 95% confidence interval: 1.46, 3.76), no sports outside school (OR
= 1.90, 95% confidence interval: 1.18, 3.06), and playing video games every
day (OR = 2.48, 95% confidence interval: 1.04, 5.92) in girls. Two-year pre
dictors included baseline BMI of 90th percentile or more (OR = 3.26, 95% co
nfidence interval: 1.52, 7.01), no sports outside school (OR = 2.14, 95% co
nfidence interval: 0.96, 4.77), and least active (OR = 2.18, 95% confidence
interval: 1.01, 4.71) in boys; only baseline BMI of 90th percentile or mor
e (OR = 2.22, 95% confidence interval: 1.02, 4.81) was significant in girls
. Results suggest the need for interventions to promote increased physical
activity in children.