河南贫困地区婴幼儿低体重与服用营养包关系

Relationship between Yingyangbao consumption and underweight status among infants and young children in impoverished areas of Henan province

目的探究服用营养包与河南省贫困地区婴幼儿低体重间的相关性。方法于2015年6—9月,采用多阶段抽样方法纳入河南省贫困地区2901名6~24月龄婴幼儿进行体重测量,同时对随行看护人进行面访式问卷调查,采用二水平logistic回归模型探究服用营养包与婴幼儿低体重间的相关性。结果研究对象低体重检出率为11.68%;二水平logistic回归分析结果显示,每周服用营养包≥4包(OR=0.613,95%CI=0.472~0.798,P<0.001)及服用营养包≥7个月(OR=0.395,95%CI=0.237~0.657,P<0.001)均与研究对象低体重呈负向关联;与传统模型相比,二水平logistic回归模型数据拟合更优,效应估计更为稳健。结论与现阶段全国水平相比,河南省贫困地区婴幼儿低体重状况较为严峻;服用营养包可有效改善婴幼儿低体重状况。

Objective To investigate the correlation between the consumption of soybean-based complementary food supplements called Yingyangbao(YYB)in Chinese and underweight status among infants and young children in poor rural areas of Henan province.Methods We recruited 2901 children aged 6 to 24 months with multistage sampling in 10 poverty-stricken counties in Henan province and then conducted body weight measurement among the children and questionnaire survey among the caregivers of the children between June and September 2015.Two-level logistic regression model was used to explore the correlation between YYB consumption and underweight among the children.Results The prevalence of underweight was 11.68%among the children.Two-level logistic regression indicated that YYB consumption of 4 packs or more per week(odds ratio[OR]=0.613,95%confidence interval[95%CI]:0.472–0.798;P<0.001)and consumption of YYB for 7 months or above(OR=0.395,95%CI:0.237–0.657;P<0.001)were reversely correlated with underweight.Comparing with conventional model,two-level logistic regression model fitted the data better and resulted in more robust effect estimation.Conclusion The prevalence of underweight among infants and young children in poor rural areas of Henan province was higher than that of national level and consumption of Yingyangbao can improve the prevalence of underweight among the infants and young children effectively.