Stability of Adolescent Body Mass Index during Three Years of Follow-up

Objective A 4-year longitudinal study was conducted to determine the prevalence of overweight, detect shifts in body mass index (BMI) distribution, and determine which adolescents were at risk for pathologic weight gain. Study design BMI was analyzed in 1746 adolescents in years 1 (2001-2002) throug...

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Bibliographic Details
Published in:The Journal of pediatrics 2007-10, Vol.151 (4), p.383-387
Main Authors: Crimmins, Nancy A., MD, Dolan, Lawrence M., MD, Martin, Lisa J., PhD, Bean, Judy A., PhD, Daniels, Stephen R., MD, PhD, Lawson, M. Louise, PhD, Goodman, Elizabeth, MD, Woo, Jessica G., PhD
Format: Article
Language:English
Subjects:
Adiposity
Adolescent
Analysis of Variance
Biological and medical sciences
Body Mass Index
Child
Female
Follow-Up Studies
General aspects
Humans
Least-Squares Analysis
Linear Models
Male
Medical sciences
Obesity - epidemiology
Obesity - prevention & control
Ohio - epidemiology
Overweight
Pediatrics
Prevalence
Risk
Weight Gain
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Summary:Objective A 4-year longitudinal study was conducted to determine the prevalence of overweight, detect shifts in body mass index (BMI) distribution, and determine which adolescents were at risk for pathologic weight gain. Study design BMI was analyzed in 1746 adolescents in years 1 (2001-2002) through 4 (2004-2005) of a school-based study. Changes in BMI-Z according to baseline BMI category were examined with general linear modeling. Results In year 1, the prevalence of at risk for overweight (BMI = 85th-95th percentile) and overweight (BMI ≥ 95th percentile) was 19.1% and 18.1%, respectively. Between years 1 and 4, the cohort exhibited no increase in the prevalence of at risk for overweight (19.1% versus 17.2%) or overweight (18.2% versus 18.8%; P > .5). The mean BMI Z-score (BMI-Z) for the cohort was identical in years 1 and 4 (0.66 ± 1.0 Z-score units). Although the overall cohort exhibited stability in BMI-Z, individuals at the lowest categories of BMI-Z (year 1 BMI Z-score
ISSN:0022-3476
1097-6833
DOI:10.1016/j.jpeds.2007.04.005