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对广州市两所爱婴医院追踪调查２２１例４个月婴儿的母乳喂养情况，结果发现：产妇出院后纯母乳喂养率逐月显著下降。在单因素分析的基础上，采用多元回归分析的方法，筛选出影响纯母乳喂养持续行为的５个因素，根据回归系数绝对值大小，各影响因素强度依次为：母乳量；母乳喂养咨询门诊；母亲患病；家庭经济收入；对“纯母乳喂养完全能满足４个月婴儿全部营养而不必给婴儿添加任何辅食”的看法。
A follow-up survey on the breastfeeding of 221 four-month infants in two baby-friendly hospitals in Guangzhou found that the rate of exclusive breastfeeding after maternal discharge was significantly reduced month by month. On the basis of univariate analysis, multiple regression analysis methods were used to screen out the five factors affecting the continuing behavior of exclusive breastfeeding. According to the absolute value of the regression coefficient, the strength of each factor was: breast milk volume; breastfeeding consultation clinic; Mother’s illness; family economic income; the opinion that “exclusive breastfeeding can fully meet the nutritional needs of a 4-month infant without having to add any complementary food to the baby”.