Prepregnancy body mass index, gestational weight gain, and birth weight in the BRISA cohort
Rev. saúde pública (Online)
;
52: 46, 2018. tab, graf
Artículo
en Inglés
| LILACS
| ID: biblio-903445
ABSTRACT
ABSTRACT OBJECTIVE To analyze the effects of maternal pre-pregnancy body mass index and weight gain during pregnancy on the baby's birth weight. METHODS We conducted a cross-sectional study with 5,024 mothers and their newborns using a Brazilian birth cohort study. In the proposed model, estimated by structural equation modeling, we tested socioeconomic status, age, marital status, pre-pregnancy body mass index, smoking habit and alcohol consumption during pregnancy, hypertension and gestational diabetes, gestational weight gain, and type of delivery as determinants of the baby's birth weight. RESULTS For a gain of 4 kg/m2 (1 Standard Deviation [SD]) in pre-pregnancy body mass index, there was a 0.126 SD increase in birth weight, corresponding to 68 grams (p < 0.001). A 6 kg increase (1 SD) in gestational weight gain represented a 0.280 SD increase in newborn weight, correponding to 151.2 grams (p < 0.001). The positive effect of pre-pregnancy body mass index on birth weight was direct (standardized coefficient [SC] = 0.202; p < 0.001), but the negative indirect effect was small (SC = -0.076, p < 0.001) and partially mediated by the lower weight gain during pregnancy (SC = -0.070, p < 0.001). The positive effect of weight gain during pregnany on birth weight was predominantly direct (SC = 0.269, p < 0.001), with a small indirect effect of cesarean delivery (SC = 0.011; p < 0.001). Women with a higher pre-pregnancy body mass index gained less weight during pregnancy (p < 0.001). CONCLUSIONS The effect of gestational weight gain on the increase in birth weight was greater than that of pre-pregnancy body mass index.
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Índice:
LILACS (Américas)
Asunto principal:
Peso al Nacer
/
Aumento de Peso
/
Índice de Masa Corporal
/
Sobrepeso
Tipo de estudio:
Estudio de etiología
/
Estudio de incidencia
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Estudio observacional
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Estudio de prevalencia
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Estudio pronóstico
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Factores de riesgo
Límite:
Femenino
/
Humanos
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Recién Nacido
/
Embarazo
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
Rev. saúde pública (Online)
Asunto de la revista:
Sa£de P£blica
Año:
2018
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Instituto Federal de Educação Ciência e Tecnologia do Maranhão/BR
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