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Perceptions and determinants of households' participation in a randomized evaluation on water quality testing and information in southern Ghana

机译：加纳南部家庭参与水质测试和信息随机评估的看法和决定因素

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In this paper, we analyze perceptions and determinants of households' participation in a randomized experiment on water quality testing and information in southern Ghana. Beneficiary households assessed the components of the intervention including its relevance and adequacy in improving understanding of water quality issues. Motivating and constraining factors to participation in the randomized experiment are also assessed. We also estimate the correlates of participation in the intervention. Social and economic benefits derived from the intervention based on perceptions are compared with impacts of the intervention using an instrumental variable approach. We found evidence that subjective analysis estimates of the effects of the intervention are higher than the objective analysis estimates. Households generally perceived the intervention to be relevant in improving their understanding of water quality issues. However, there are differing opinions based on random assignment into either child or adult treatment groups on most- and least-liked attributes of the intervention, and also motivating and constraining factors affecting participation in the intervention. The factors that statistically and significantly influenced participation in the intervention include educational attainment, ethnicity, religious denomination and marital status of the household heads, in addition to the location of residence.
机译：在本文中，我们分析了加纳南部家庭参与水质测试和信息随机试验的看法和决定因素。受益家庭评估了干预措施的组成部分，包括干预措施的相关性和充分性，以增进对水质问题的了解。还评估了参与随机实验的动机和制约因素。我们还估计参与干预的相关性。使用工具变量方法将基于感知的干预措施所产生的社会和经济利益与干预措施的影响进行比较。我们发现证据表明干预效果的主观分析估计值高于客观分析估计值。住户普遍认为该干预措施对于增进他们对水质问题的理解是相关的。但是，基于对干预措施最喜欢和最不喜欢的属性随机分配到儿童或成人治疗组中的意见不一，而且还有影响参与干预措施的动机和制约因素。统计上和显着影响参与干预的因素，除了居住地以外，还包括受教育程度，种族，宗教信仰和户主的婚姻状况。

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