Horta Bernardo L, Victora Cesar G, Gigante Denise P, Santos Janaina, Barros Fernando C
Programa de Pós-Graduação em Epidemiologia, Universidade Federal de Pelotas. Pelotas, RS, Brasil.
Rev Saude Publica. 2007 Feb;41(1):13-8. doi: 10.1590/s0034-89102007000100003.
To assess the intergenerational repetition of breastfeeding duration in a cohort of adolescent mothers who had been prospectively followed up since birth.
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.
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)].
Duration of breastfeeding is slightly higher among infants whose mother was breastfed.
评估自出生起就接受前瞻性随访的青少年母亲队列中母乳喂养持续时间的代际重复性。
对1982年在巴西南部城市佩洛塔斯发生的所有医院分娩（N = 5,914）进行前瞻性研究。该队列于1984年和1986年接受访查，并收集了喂养方式的信息。2001年，在活产信息系统中进行搜索，识别出1982年出生且在1995年1月至2001年3月期间分娩的青少年。已生育的青少年回答了一份关于妊娠相关变量和每个孩子母乳喂养持续时间的详细问卷。对于多产青少年，使用第一个活产孩子的信息。单变量和多变量分析采用方差稳健调整的泊松回归。
共识别出446名属于1982年队列的已生育青少年，其中420名（94.2%）接受了访谈。在对混杂变量进行调整后，与曾经接受母乳喂养的母亲相比，未接受母乳喂养的母亲不母乳喂养自己孩子的相对风险为1.34（95%可信区间：0.35；5.18）。同样，母乳喂养少于一个月的青少年不母乳喂养自己婴儿的可能性略高，但不显著（相对风险=1.64；95%可信区间：0.70；4.03）。在那些自己母乳喂养少于一个月的青少年母亲中，母乳喂养少于六个月的比例更高（患病率比=1.29；95%可信区间：1.02；1.62）。
母亲接受过母乳喂养的婴儿母乳喂养持续时间略长。
