Socioeconomic status, birth weight, maternal smoking during pregnancy and adiposity in early adult life: an analysis using structural equation modeling

Cadernos de Saúde Pública

Antônio Augusto Moura Da Silva²  Ana Glória Godoi Vasconcelos¹  Heloisa Bettiol¹  Marco Antonio Barbieri¹ 

[1] ,Universidade Federal do Maranhão Departamento de Saúde Pública São Luís,Brasil

关键词: Birth Weight;    Smoking;    Adisposity;    Mathematical Models;    Methods;    Peso ao Nascer;    Tabagismo;    Adisposidade;    Modelos Matemáticos;    Métodos;   

DOI  :  10.1590/S0102-311X2010000100003

来源: SciELO

【 摘 要 】

We describe here an example of structural equation modeling in epidemiology. The association between birth weight and adiposity in early adult life, adjusted for the number of cigarettes smoked during pregnancy and socioeconomic status at birth, was evaluated. Data involving 2,063 adults from the 1978/1979 Ribeirão Preto cohort study were used. Adiposity was measured by body mass index (BMI), waist circumference (WC) and the sum of triceps and subscapular skinfolds (STSS). Models were submitted to maximum likelihood estimation, separately for men and women. Birth weight had a small and significant effect on adiposity in men (standardized coefficient, SC = 0.08) and women (SC = 0.09). Smoking during pregnancy did not influence adiposity in men (SC = 0.004), but its effect was marginally significant in women (SC = 0.07; P = 0.056). Socioeconomic status at birth had a small and positive effect on adiposity in men (SC = 0.08) and a moderate and negative effect in women (SC = -0.16). In this young adult population, BMI, WC and STSS used alone or in combination were valid estimators of body adiposity.

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