关键词: 汉族, 回族, 母乳营养成分, 倾向性得分匹配

Abstract: Objective To know about the differences in breast milk composition among Han and Hui nationalities of Chinese females,in order to provide basic data for promoting breastfeeding,growth and development of infants. Methods Lactating women were voluntarily recruited in this study June 2019 to May 2020 and their breast milk was collected. Human Milk Analyzer was used to detect the fat,protein,lactose and dry matter content,while the titration method was used to measure the calcium level. Propensity score was used to match the potential confounders before comparing the breast milk composition between Han and Hui groups. Results Total of 1 030 women were enrolled in this study,of whom 43 were Hui people. After matching by propensity score,40 Han and Hui lactating women were paired. There were no significant differences in breast milk energy,protein,lactose,fat,calcium,dry matter between Han and Hui lactating women(t=0.832,-0.629,-1.058,0.783,-0.758,1.217,P＞0.05). A positive correlation was observed between lactation days and protein only in Han women(r=-0.191,r'=-0.193,P<0.001). But this correlation was not observed in breast milk of Hui women(P＞0.05). Conclusions There were no significant differences in breast milk composition between Han and Hui women. However,breast milk protein significantly decreased in Han lactating women.

Key words: the Han nationality, the Hui nationality, breast milk nutrients, propensity score matching