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Arch Pediatr Adolesc Med. 2006 Apr;160(4):417-22.

Television exposure and overweight risk in preschoolers.

Author information

  • 1Center for Human Growth and Development and Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI 48109-0406, USA. jlumeng@umich.edu

Abstract

OBJECTIVE:

To test the independent effect of television exposure in preschool-aged children on overweight risk.

DESIGN:

Cross-sectional and longitudinal analysis of the National Institute of Child Health and Human Development Study of Early Child Care and Youth Development.

SETTING:

Ten US sites.

PARTICIPANTS:

One thousand sixteen children selected via conditional random sampling.

MAIN EXPOSURE:

Being awake in the room with the television on for 2 hours or more per day, by maternal report at age 36 months.

MAIN OUTCOME MEASURES:

Child overweight (body mass index [calculated as weight in kilograms divided by the square of height in meters] > or =95th percentile) calculated from measured anthropometrics at ages 36 and 54 months. Covariates tested included child sex and race; maternal marital status, education, age, and depressive symptoms; income-needs ratio, child behavior problems; Home Observation for Measurement of the Environment total score; hours per week in nonparental care; and proportion of television exposure that was educational.

RESULTS:

At age 36 months, 5.8% of children were overweight; at age 54 months, 10.0% were overweight. Exposure to 2 or more hours of television per day was associated with an increased risk of overweight at both age 36 months (odds ratio, 2.92; 95% confidence interval, 1.36-6.24) and age 54 months (odds ratio, 1.71; 95% confidence interval, 1.03-2.83) in unadjusted analyses. Only maternal age altered the concurrent relationship, and the effect of television remained significant (odds ratio, 2.61; 95% confidence interval, 1.21-5.62). Television exposure at age 36 months was no longer a significant predictor of overweight at age 54 months when controlling for covariates.

CONCLUSION:

Excessive television exposure is a risk factor for overweight in preschoolers independent of a number of potential confounders associated with the quality of the home environment.

PMID:
16585488
[PubMed - indexed for MEDLINE]
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