1Department of Global Health and Population,Harvard T.H. Chan School of Public Health,665 Huntington Avenue,Boston,MA02115,USA.
2Ifakara Health Institute,Dar es Salaam,Tanzania.
Public Health Nutr. 2019 Jun;22(9):1646-1653. doi: 10.1017/S1368980018003798. Epub 2019 Feb 12.
The present study's aim was to assess the impact of a nutrition-sensitive intervention on dietary diversity and home gardening among non-participants residing within intervention communities.
The study was a cross-sectional risk factor analysis using linear and logistic multivariate models.
In Tanzania, women and children often consume monotonous diets of poor nutritional value primarily because of physical or financial inaccessibility or low awareness of healthy foods.ParticipantsParticipants were women of reproductive age (18-49 years) in rural Tanzania.
Mean dietary diversity was low with women consuming three out of ten possible food groups. Only 23·4 % of respondents achieved the recommended minimum dietary diversity of five or more food groups out of ten per day. Compared with those who did not, respondents who had a neighbour who grew crops in their home garden were 2·71 times more likely to achieve minimum dietary diversity (95 % CI 1·60, 4·59; P=0·0004) and 1·91 times more likely to grow a home garden themselves (95 % CI 1·10, 3·33; P=0·02). Other significant predictors of higher dietary diversity were respondent age, education and wealth, and number of crops grown.
These results suggest that there are substantial positive externalities of home garden interventions beyond those attained by the people who own and grow the vegetables. Cost-effectiveness assessments of nutrition-sensitive agriculture, including home garden interventions, should factor in the effects on the community, and not just on the individual households receiving the intervention.
本研究旨在评估一项营养敏感干预措施对居住在干预社区内的非参与者的饮食多样性和家庭园艺的影响。
本研究是一项使用线性和逻辑多元模型的横断面风险因素分析。
在坦桑尼亚，妇女和儿童经常食用单调、营养价值低的饮食，主要是因为身体或经济上无法获得或对健康食品的认识低。
参与者是坦桑尼亚农村地区的育龄妇女（18-49 岁）。
饮食多样性平均值较低，妇女食用十种可能食物中的三种。只有 23.4%的受访者每天达到建议的十种食物中至少五种的最低饮食多样性。与未种植的受访者相比，拥有在自家花园中种植作物的邻居的受访者达到最低饮食多样性的可能性高 2.71 倍（95%CI 1.60，4.59；P=0.0004），且自家种植花园的可能性高 1.91 倍（95%CI 1.10，3.33；P=0.02）。更高饮食多样性的其他显著预测因素包括受访者年龄、教育和财富以及种植的作物数量。
这些结果表明，家庭园艺干预措施除了对拥有和种植蔬菜的人产生积极的外部影响外，还有很大的积极影响。包括家庭园艺干预措施在内的营养敏感农业的成本效益评估应考虑到对社区的影响，而不仅仅是接受干预的个别家庭。
