Elo I T, Grummer-Strawn L M
Population Studies Center, University of Pennsylvania, Philadelphia 19104.
Soc Biol. 1993 Fall-Winter;40(3-4):224-43.
Both breastfeeding initiation and duration increased in Peru during 1977-86. Although one would have expected that the average incidence and duration of breastfeeding would have declined as a result of changes in population characteristics, the potential for an overall decline was more than overcome by changes in behavior. A net increase in initiation and duration is shown for all subgroups of interest. The largest absolute increases are documented for children who, in 1977, were the least likely to be breastfed and who were breastfed for the shortest durations.
1977年至1986年期间，秘鲁的母乳喂养起始率和持续时间均有所增加。尽管人们原本预计，由于人口特征的变化，母乳喂养的平均发生率和持续时间会下降，但行为上的变化不仅抵消了总体下降的可能性，还带来了净增长。所有相关子群体的起始率和持续时间都有净增长。记录显示，绝对增长幅度最大的是1977年最不可能进行母乳喂养且母乳喂养时间最短的儿童。
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