Seasonality of infant feeding practices in three Brazilian birth cohorts.
Seasonality of infant feeding practices in three Brazilian birth cohorts.
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DOI：
10.1093/ije/dys002
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发表时间：
2012-06
影响因子：
7.7
通讯作者：
Victora CG
中科院分区：
文献类型：
--
作者：
González-Chica DA;Gonçalves H;Nazmi A;Santos IS;Barros AJ;Matijasevich A;Victora CG
背景我们在巴西南部城市佩尔蒂尼奥的三项基于人群的出生队列研究中评估了出生季节对母乳喂养持续时间和其他喂养模式的影响。方法对1982、1993、2004年在北京市医院出生的5914、5249、4287例儿童进行队列研究。在婴儿出生后的头2年，定期对婴儿及其母亲进行访问，以收集有关母乳喂养持续时间和定期引入不同类型食物的年龄的信息。研究了两个自变量：出生月份和出生后第一个月的平均环境温度。生存分析和卡方检验用于评估相关性。还计算了基于温度的斜率指数的不平等。结果母乳喂养的持续时间较低的儿童出生在4月至6月（冬季前几个月），并花费他们的第一个月的生活在较冷的温度。出生季节对母乳喂养模式和牛奶引入的影响因母亲教育程度而异，对教育程度较低母亲的子女影响最大。早期引入水果（1982年和1993年队列）和蔬菜（1982年队列）也与出生后第一个月的环境温度较低有关，但与出生后三个月无关。结论寒冷的气温对母乳喂养的持续时间和婴儿期的喂养模式产生不利影响，特别是在最贫困的人群中。这一发现应在母乳喂养促进方案中加以考虑。
Background We assessed the influence of season of birth on duration of breastfeeding and other feeding patterns in three population-based birth cohort studies in the city of Pelotas, Southern Brazil. Methods In 1982, 1993 and 2004, all hospital-born children in the city were enrolled in three cohort studies (n = 5914, 5249 and 4287, respectively). Children and their mothers were periodically visited in the first 2 years of life, to collect information on the duration of breastfeeding and the ages at which different types of foods were introduced on a regular basis. Two independent variables were studied: month of birth and mean environmental temperature in the first month of life. Survival analyses and chi-squared tests were used to evaluate the associations. Temperature-based slope indices of inequality were also calculated. Results Duration of breastfeeding was lower among children born from April to June (months preceding winter) and spending their first month of life in colder temperatures. The influence of season of birth on breastfeeding patterns and the introduction of cow's milk differed according to maternal education, with the strongest effects among children belonging to less educated mothers. Early introduction of fruits (1982 and 1993 cohorts) and vegetables (1982 cohort) were also associated with lower environmental temperature in the first month of life, but not with trimester of birth. Conclusion Colder temperatures adversely affect duration of breastfeeding and feeding patterns in infancy, especially among the poorest. This finding should be considered in breastfeeding promotion programmes.
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母乳喂养以及腹泻发病率和死亡率的风险。
影响因子：
4.5
作者：
Lamberti LM;Fischer Walker CL;Noiman A;Victora C;Black RE
通讯作者：
Black RE
DOI：
10.1590/s0102-311x2003000700005
发表时间：
2003-01-01
期刊：
Cadernos de Saúde Pública
影响因子：
--
作者：
Rea, Marina Ferreira
通讯作者：
Rea, Marina Ferreira
影响因子：
7.7
作者：
Moore, SE;Fulford, AJC;Prentice, AM
通讯作者：
Prentice, AM
影响因子：
5.2
作者：
PRENTICE, A;PRENTICE, AM;WHITEHEAD, RG
通讯作者：
WHITEHEAD, RG
影响因子：
168.9
作者：
Gakidou, Emmanuela;Cowling, Krycia;Murray, Christopher J. L.
通讯作者：
Murray, Christopher J. L.