OBJECTIVE: To identify determinants of weight (BW) and length at birth (BL). MATERIAL AND METHODS: We studied 481 mother-newborn pairs in three Mexico City hospitals. Multiple regression models were developed to identify statistically significant predictors of BW and BL with respect to a predetermined biological model. Independent variables included were: maternal anthropometry, age, smoking habits, and civil status, parental education, obstetric history, hypertension, and neonatal characteristics. RESULTS: In the group with calf circumference (CC), height and head circumference below the median BW was 133, 92 and 96 g lower (+/- 35 standard error -SE-, p < 0.01) than the group above the median, adjusting for socioeconomic, obstetric history, and neonatal characteristics (NC). In the group below the median CC or height, BL was 5.8 or 6.2 mm (+/- 1.9 mm SE, p < 0.01) respectively, adjusting for obstetric history and NC. CONCLUSIONS: Results suggest that maternal anthropometry is the most important predictor of birth size and that predictors for BW and BL differ.
OBJECTIVE: To identify determinants of weight (BW) and length at birth (BL). MATERIAL AND METHODS: We studied 481 mother-newborn pairs in three Mexico City hospitals. Multiple regression models were developed to identify statistically significant predictors of BW and BL with respect to a predetermined biological model. Independent variables included were: maternal anthropometry, age, smoking habits, and civil status, parental education, obstetric history, hypertension, and neonatal characteristics. RESULTS: In the group with calf circumference (CC), height and head circumference below the median BW was 133, 92 and 96 g lower (+/- 35 standard error -SE-, p < 0.01) than the group above the median, adjusting for socioeconomic, obstetric history, and neonatal characteristics (NC). In the group below the median CC or height, BL was 5.8 or 6.2 mm (+/- 1.9 mm SE, p < 0.01) respectively, adjusting for obstetric history and NC. CONCLUSIONS: Results suggest that maternal anthropometry is the most important predictor of birth size and that predictors for BW and BL differ.
Authors: Myriam Afeiche; Karen E Peterson; Brisa N Sánchez; David Cantonwine; Héctor Lamadrid-Figueroa; Lourdes Schnaas; Adrienne S Ettinger; Mauricio Hernández-Avila; Howard Hu; Martha M Téllez-Rojo Journal: Environ Health Perspect Date: 2011-06-29 Impact factor: 9.031