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Incidence rate ratios for obesity according to birth weight and parental self-reported maternal obesity status (panel A, mother nonobese; panel B, mother obese), National Longitudinal Study of Adolescent Health, 1994–2002. Incidence rate ratios were derived from a longitudinal, random-effects Poisson model with adjustment for age (in years), age squared (in years), sex, race/ethnicity, and parental education. Bars, 95% confidence interval.
