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[Breastfeeding duration in two generations].

Authors: Horta, Bernardo L; Victora, Cesar G; Gigante, Denise P; Santos, Janaina; Barros, Fernando C;

[Breastfeeding duration in two generations].

Abstract

OBJETIVO: Analisar o efeito intergeracional da duração da amamentação em uma coorte de mães adolescentes que tem sido acompanhada prospectivamente desde o nascimento. MÉTODOS: Todos os nascimentos hospitalares ocorridos em 1982 na cidade de Pelotas (N=5.914) foram estudados prospectivamente. A coorte foi visitada em 1984 e 1986 e foi coletada informação sobre a duração da amamentação. Em 2001, foram identificados no Sistema de Informação sobre Nascidos Vivos, os nascimentos ocorridos no período de janeiro de 1995 a março de 2001, cuja mãe havia nascido em 1982. As adolescentes que tiveram filho(s) nascido(s) vivo(s) foram visitadas e responderam um questionário detalhado sobre a gravidez e a duração da amamentação para cada filho. Para as multíparas, informação sobre o primeiro filho nascido vivo foi usada na análise. A regressão de Poisson com ajuste robusto da variância foi utilizada tanto na análise univariada como na multivariada. RESULTADOS: Foram identificadas 446 adolescentes pertencentes à coorte de 1982, das quais 420 (94,2%) foram entrevistadas. Após controle para fatores de confusão, aquelas que não foram amamentadas apresentaram risco relativo de 1,34 (IC 95%: 0,35; 5,18) de não amamentar os seus filhos, comparado às que foram amamentadas. Similarmente, as adolescentes que foram amamentadas por menos de um mês apresentaram maior risco - não estatisticamente significativo - de não amamentar os seus filhos (RR=1,64; IC 95%: 0,70; 4,03). A proporção de adolescentes que interromperam a amamentação nos primeiros seis meses foi maior entre aquelas que foram amamentadas por menos de um mês (PR=1,29; IC 95%: 1,02; 1,62). CONCLUSÕES: A duração da amamentação é discretamente maior entre as crianças cujas mães foram amamentadas.

OBJECTIVE: To assess the intergenerational repetition of breastfeeding duration in a cohort of adolescent mothers who had been prospectively followed up since birth. METHODS: All hospital births occurred in Pelotas (N=5,914), a Southern Brazilian city, in 1982 were studied prospectively. The cohort was visited in 1984 and 1986, and information on feeding practices was gathered. In 2001, a search was conducted in the Live Birth Information System and adolescents born in 1982 who gave birth between January 1995 and March 2001 were identified. Parous adolescents answered a detailed questionnaire on pregnancy-related variables and breastfeeding duration for each child. For multiparous adolescents, the information from the first live born child was used. Poisson regression with robust adjustment of the variance was used in the univariate and multivariable analysis. RESULTS: A total of 446 parous adolescents belonging to the 1982 cohort were identified, of which 420 (94.2%) were interviewed. After adjustment for confounding variables, mothers who had not been breastfed presented a relative risk of 1.34 (95% CI: 0.35; 5.18) of not breastfeeding their children, compared to mothers who were ever breastfed. Similarly, adolescents who were breastfed for less than one month were slightly - but not significantly - more likely to fail to breastfeed their own infants (RR=1.64; 95% CI: 0.70; 4.03). The proportion of adolescent mothers who breastfed for less than six months was higher among those who were themselves breastfed for less than one month (PR=1.29; 95% CI: 1.02; 1.62)]. CONCLUSIONS: Duration of breastfeeding is slightly higher among infants whose mother was breastfed.

Related Organizations
Keywords

Risk, Time Factors, Aleitamento materno, Fatores de risco, Adolescent, Relação entre gerações, Infant, Newborn, Estudos de coortes, Breast feeding, Intergenerational relations, Pregnancy in adolescence, Cohort effects, Gravidez na adolescência, Breast Feeding, Risk factors, Intergenerational Relations, Cohort studies, Humans, Female, Epidemiologic Methods, Efeito de coortes

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
7
Average
Average
Average
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