Hoddinott John, Ahmed Ishita, Ahmed Akhter, Roy Shalini
Division of Nutritional Sciences, Cornell University, Ithaca, New York, United States of America.
Department of Economics, University of Maryland, College Park, Maryland, United States of America.
PLoS One. 2017 Jun 21;12(6):e0179866. doi: 10.1371/journal.pone.0179866. eCollection 2017.
To examine the impact on infant and young child nutrition knowledge and practice of mothers who were neighbors of mothers participating in a nutrition Behavior Change Communication (BCC) intervention in rural Bangladesh.
We analyzed data from 300 mothers whose neighbor participated in a nutrition BCC intervention and 600 mothers whose neighbor participated in an intervention that did not include BCC. We constructed measures capturing mothers' knowledge of infant and young child nutrition (IYCN) and measures of food consumption by children 6-24m. The effect on these outcomes of exposure to a neighbor receiving a nutrition BCC intervention was estimated using ordinary least squares and probit regressions. The study was registered with ClinicalTrials.gov (Study ID: NCT02237144).
Having a neighboring mother participate in a nutrition BCC intervention increased non-participant mothers' IYCN knowledge by 0.17 SD (translating to 0.3 more correct answers). They were 14.1 percentage points more likely to feed their 6-24m children legumes and nuts; 11.6 percentage points more likely to feed these children vitamin A rich fruits and vegetables; and 10.0 percentage points more likely to feed these children eggs. Children of non-participant mothers who had a neighboring mother participate in a nutrition BCC intervention were 13.8 percentage points more likely to meet World Health Organization (WHO) guidelines for minimum diet diversity, 11.9 percentage points more likely to meet WHO guidelines for minimum acceptable diet, and 10.3 percentage points more likely to meet WHO guidelines for minimum meal frequency for children who continue to be breastfed after age 6m. Children aged 0-6m of non-participant mothers who are neighbors of mothers receiving BCC were 7.1 percentage points less likely to have ever consumed water-based liquids.
Studies of nutrition BCC that do not account for information spillovers to non-participants may underestimate its benefits in terms of IYCN knowledge and practice.
研究在孟加拉国农村地区，参与营养行为改变沟通（BCC）干预项目母亲的邻居，其母亲身份对婴幼儿营养知识及实践的影响。
我们分析了300名邻居参与营养BCC干预的母亲以及600名邻居参与不含BCC干预项目母亲的数据。我们构建了衡量母亲婴幼儿营养知识（IYCN）的指标以及6 - 24个月儿童食物消费的指标。使用普通最小二乘法和概率回归估计邻居接受营养BCC干预对这些结果的影响。该研究已在ClinicalTrials.gov注册（研究编号：NCT02237144）。
有邻居母亲参与营养BCC干预，使未参与的母亲的IYCN知识提高了0.17个标准差（相当于多了0.3个正确答案）。她们给6 - 24个月大孩子喂食豆类和坚果的可能性增加了14.1个百分点；给这些孩子喂食富含维生素A的水果和蔬菜的可能性增加了11.6个百分点；给这些孩子喂食鸡蛋的可能性增加了10.0个百分点。邻居母亲参与营养BCC干预的未参与母亲的孩子，达到世界卫生组织（WHO）最低饮食多样性指南的可能性增加了13.8个百分点，达到WHO最低可接受饮食指南的可能性增加了11.9个百分点，对于6个月龄后继续母乳喂养的孩子，达到WHO最低进餐频率指南的可能性增加了10.3个百分点。接受BCC干预母亲的邻居中，未参与的母亲0 - 6个月大的孩子饮用含液体食物的可能性降低了7.1个百分点。
未考虑信息向未参与者溢出的营养BCC研究，可能在IYCN知识和实践方面低估其益处。
