Hui Wang1, Gabriel M Leung, C Mary Schooling. 1. School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, People's Republic of China.
Abstract
OBJECTIVE: Self-esteem is an important determinant of adolescent mental health. Prior adiposity may be a factor in the development of self-esteem. However, the association of adiposity with self-esteem is inconsistent, perhaps because adiposity and self-esteem tend to be socially patterned, making it unclear whether observed associations are biologically based or contextually specific. METHODS: Multivariable partial least squares regression was used to assess the adjusted association of birth weight and childhood body mass index (BMI) z-score at 3 and 9 months and at 3, 7, 9 and 11 years and changes in BMI z-score with self-esteem at ∼11 years, assessed from the self-reported Culture Free Self-Esteem Inventory in a population-representative Chinese birth cohort, which has little social patterning of adiposity. Whether the associations varied by sex also was assessed. RESULTS: Self-esteem score was available for 6,520 girls and boys (78.5% follow-up). Birth weight z-score, BMI z-scores at 3 and 9 months and at 3, 7, 9, and 11 years, and successive BMI z-score changes had little association with self-esteem at ∼11 years, adjusted for socio-economic position. CONCLUSIONS: In a developed, non-Western setting, life course BMI does not appear to be a factor in the development of self-esteem in early adolescence, suggesting that observed associations to date may be contextually specific rather than biologically based.
OBJECTIVE: Self-esteem is an important determinant of adolescent mental health. Prior adiposity may be a factor in the development of self-esteem. However, the association of adiposity with self-esteem is inconsistent, perhaps because adiposity and self-esteem tend to be socially patterned, making it unclear whether observed associations are biologically based or contextually specific. METHODS: Multivariable partial least squares regression was used to assess the adjusted association of birth weight and childhood body mass index (BMI) z-score at 3 and 9 months and at 3, 7, 9 and 11 years and changes in BMI z-score with self-esteem at ∼11 years, assessed from the self-reported Culture Free Self-Esteem Inventory in a population-representative Chinese birth cohort, which has little social patterning of adiposity. Whether the associations varied by sex also was assessed. RESULTS: Self-esteem score was available for 6,520 girls and boys (78.5% follow-up). Birth weight z-score, BMI z-scores at 3 and 9 months and at 3, 7, 9, and 11 years, and successive BMI z-score changes had little association with self-esteem at ∼11 years, adjusted for socio-economic position. CONCLUSIONS: In a developed, non-Western setting, life course BMI does not appear to be a factor in the development of self-esteem in early adolescence, suggesting that observed associations to date may be contextually specific rather than biologically based.
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