Gestational age and newborn size according to parental social mobility: an intergenerational cohort study.
J Epidemiol Community Health
; 69(10): 944-9, 2015 Oct.
Article
em En
| MEDLINE
| ID: mdl-26109560
ABSTRACT
BACKGROUND:
We examined the associations between socioeconomic trajectories from birth to adulthood and gestational age and birth size in the next generation, using linked data from two population-based birth cohorts carried out in a Brazilian city. By comparing socioeconomic trajectories of mothers and fathers, we attempted to identify-specific effects of maternal and paternal socioeconomic trajectory on offspring birth weight, birth length, head circumference and gestational age at birth.METHODS:
2 population-based birth cohort studies were carried out in 1982 and 2004 in Pelotas (Brazil); 156 mothers and 110 fathers from the earlier cohort had children in 2004. Gestational age and birth length, weight and head circumference were measured. Analyses were carried out separately for mothers and fathers. Mediation analyses assessed the role of birth weight and adult body mass index (BMI).RESULTS:
Among mothers, but not for fathers, childhood poverty was strongly associated with smaller size in the next generation (about 400â g in weight and 1.5â cm in height) and shorter gestations (about 2â weeks). Adult poverty did not play a role. For mothers, the associations with gestational age, birth length and weight-but not with head circumference-persisted after adjusting for maternal birth weight and for the height and weight of the grandmother. Maternal birth weight did not mediate the observed associations, but high maternal BMI in adulthood was partly responsible for the association with gestational age.CONCLUSIONS:
Strong effects of early poverty on gestational age and birth size in the next generation were observed among mothers, but not among fathers. These findings suggest a specific maternal effect of socioeconomic trajectory, and in particular of early poverty on offspring size and duration of pregnancy.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pobreza
/
Mobilidade Social
/
Peso ao Nascer
/
Idade Gestacional
/
Pai
/
Mães
Tipo de estudo:
Diagnostic_studies
/
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Aspecto:
Determinantes_sociais_saude
Limite:
Adult
/
Female
/
Humans
/
Male
/
Newborn
/
Pregnancy
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
J Epidemiol Community Health
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Brasil