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Updated: Aug 16, 2026

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Published on: October 25, 2015
[Length and weight at birth: the role of maternal nutrition]
T González-Cossío1, L H Sanín, M Hernández-Avila
1Centro de Investigación en Salud Poblacional (CISP), Instituto Nacional de Salud Pública (INSP), México. tgonzale@insp3.insp.mx
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.
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