Encouraging sanitation investment in the developing world: A cluster-randomized trial
Encouraging sanitation investment in the developing world: A cluster-randomized trial
复制标题
DOI：
10.1126/science.aaa0491
复制
发表时间：
2015-05-22
期刊：
影响因子：
56.9
通讯作者：
Mobarak, Ahmed Mushfiq
中科院分区：
文献类型：
--
作者：
Guiteras, Raymond;Levinsohn, James;Mobarak, Ahmed Mushfiq
在发展中国家，恶劣的卫生条件导致了发病率和死亡率，但是对于什么样的政策可以增加卫生设施的覆盖率存在分歧。为了衡量替代政策对卫生厕所投资的影响，我们将孟加拉国农村的380个社区分配到不同的营销处理中——社区动机和信息；补贴;供给侧市场准入干预；还有一个对照组，在一个集群随机试验中。社区动机本身并没有增加卫生厕所拥有率（+1.6个百分点，P = 0.43），供给侧干预也没有（+0.3个百分点，P = 0.90）。对大多数无地穷人的补贴增加了受补贴家庭（+22.0个百分点，P < 0.001）及其未受补贴邻居（+8.5个百分点，P = 0.001）的所有权，这表明邻居之间的投资决策是相互关联的。补贴还使露天排便减少了14个百分点（P < 0.001）。
Poor sanitation contributes to morbidity and mortality in the developing world, but there is disagreement on what policies can increase sanitation coverage. To measure the effects of alternative policies on investment in hygienic latrines, we assigned 380 communities in rural Bangladesh to different marketing treatments-community motivation and information; subsidies; a supply-side market access intervention; and a control-in a cluster-randomized trial. Community motivation alone did not increase hygienic latrine ownership (+1.6 percentage points, P = 0.43), nor did the supply-side intervention (+0.3 percentage points, P = 0.90). Subsidies to the majority of the landless poor increased ownership among subsidized households (+22.0 percentage points, P < 0.001) and their unsubsidized neighbors (+8.5 percentage points, P = 0.001), which suggests that investment decisions are interlinked across neighbors. Subsidies also reduced open defecation by 14 percentage points (P < 0.001).