Sun Jing, Xu Jiao, Huo Junsheng, Li Jin, Wang Lijuan, Tang Yanbin, Huang Jian, Wang Ou, Gong Weiyi, Chang Suying
National Instutue for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
United Nations Children's Fund, Beijing 100600, China.
Wei Sheng Yan Jiu. 2021 May;50(3):360-365. doi: 10.19813/j.cnki.weishengyanjiu.2021.03.002.
To evaluate the effect of Yingyangbao(YYB) intervention in 6-23 months infants in six poor counties from Shanxi, Hubei and Yunnan Provinces.
Probability proportionate to size sampling method was used to extract townships and villages, and random isometric sampling was used to select monitored infants. A baseline survey was completed in 2012. Yingyangbao was delivered to all the infants in the counties through a registration system started in 2013 and then the delivering has been continuously conducted to the infants according to their age. The cross sectional sampled infants were monitored and evaluated of the effect in 2014 and 2015 respectively. Using synthetic clustering grouping method, the infants were divided into quasi-control group(YYB-NG), YYB intervention group(YYB-FG)for comparative analysis to eliminate the effect of YYB intervention. Multiple linear regression analysis were used to establish the dose-effect relationship between YYB intervention, other factors and main nutrition indices.
A total of 4809 individuals were included in this study, among which data of 2273 individuals were included in the YYB-NG and 2536 data were included in the YYB-FG. The body length of YYB-FG and YYB-NG was 77.6 cm and 75.9 cm, respectively. Stunting rates of YYB-FG and YYB-NG were 6. 8% and 10. 3%, respectively. Hb levels and anemia rates of YYB-FG and YYB-NG were 121. 3 g/L, 117. 1 g/L and 21. 2%, 32. 1% respectively, with statistically significant difference(P& lt; 0.05). However, there was no significant difference in body weight between the groups. Multiple linear regression showed that YYB intervention has a significant quantitative relationship with body length, Hb, HAZ. The regression also implied that the influencing factor including month-age, gender, birth-height, birth-weight, minimum dietary diversity, caregiver educational background have a significant relationship with nutrition improvement.
YYB intervention can effectively improve the body length, Hb and HAZ, while reduce stunting rate and anemia rate of IYC in the intervention area.
评估营养包干预对来自山西、湖北和云南六县6至23个月婴幼儿的影响。
采用按规模大小概率抽样法抽取乡镇和村庄，随机等距抽样选取监测婴幼儿。2012年完成基线调查。通过2013年启动的登记系统向各县所有婴幼儿发放营养包，之后根据婴幼儿年龄持续发放。分别于2014年和2015年对横断面抽样婴幼儿的干预效果进行监测和评估。采用综合聚类分组法，将婴幼儿分为准对照组（营养包非干预组）、营养包干预组进行对比分析，以消除营养包干预的影响。采用多元线性回归分析建立营养包干预、其他因素与主要营养指标之间的剂量效应关系。
本研究共纳入4809例个体，其中营养包非干预组纳入2273例个体的数据，营养包干预组纳入2536例个体的数据。营养包干预组和营养包非干预组的身长分别为77.6厘米和75.9厘米。营养包干预组和营养包非干预组的生长迟缓率分别为6.8%和10.3%。营养包干预组和营养包非干预组的血红蛋白水平和贫血率分别为121.3克/升、117.1克/升和21.2%、32.1%，差异有统计学意义（P<0.05）。然而，两组间体重无显著差异。多元线性回归显示，营养包干预与身长、血红蛋白、身高别体重有显著的定量关系。回归还表明，月龄、性别、出生身长、出生体重、最小饮食多样性、照料者教育背景等影响因素与营养改善有显著关系。
营养包干预可有效改善干预地区婴幼儿的身长、血红蛋白和身高别体重，同时降低生长迟缓率和贫血率。
