Supply and Demand for Improved Sanitation: Results from Randomized Pricing Experiments in Rural Tanzania
Supply and Demand for Improved Sanitation: Results from Randomized Pricing Experiments in Rural Tanzania
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DOI：
10.1021/acs.est.6b03846
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发表时间：
2017-06-20
影响因子：
11.4
通讯作者：
Dupas, Pascaline
中科院分区：
文献类型：
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作者：
Peletz, Rachel;Cock-Esteb, Alicea;Dupas, Pascaline
改善获得卫生设施的机会是全球公共卫生的优先事项。要通过私人提供扩大卫生设施的覆盖范围，就需要有足够的消费者需求。为了衡量坦桑尼亚农村消费者对卫生厕所平台产品的需求，我们在1638个未改善厕所的家庭中进行了随机、基于凭证的现金销售试验。我们还评估了多种供应链选择，以确定向农村家庭提供厕所平台产品的成本。对于混凝土厕所SanPlat， 60%的家庭愿意支付0.48美元，10%的家庭愿意支付4.05美元，但向家庭供应SanPlat的平均成本为7.51美元。同样，对于塑料卫生平台，支付意愿（WTP）从1.43美元价格时的近60%下降到12.29美元价格时的5%，而平均供应成本为23.28美元。WTP在参加国家卫生运动的村庄和没有参加的村庄之间没有显著差异。随机信息干预措施，包括卫生数据共享和以同伴为基础接触厕所平台产品，对WTP的影响很小。总之，目前家庭对厕所平台产品的需求太低，无法实现通过完全商业化分配改善卫生设施覆盖率的国家目标。
Improving access to sanitation is a global public health priority. Sufficient consumer demand is required for sanitation coverage to expand through private provision. To measure consumer demand for hygienic latrine platform products in rural Tanzania, we conducted a randomized, voucher-based real-money sales trial with 1638 households with unimproved latrines. We also evaluated multiple supply chain options to determine the costs of supplying latrine platform products to rural households. For concrete latrine SanPlats, 60% of households were willing to pay US$0.48 and 10% of households were willing to pay US$4.05, yet the average cost of supplying the SanPlat to households was US $7.51. Similarly, for plastic sanitary platforms, willingness-to-pay (WTP) dropped from almost 60% at a price of US$1.43 to 5% at a price of US$12.29, compared to an average supply cost of US$23.28. WTP was not significantly different between villages that had participated in the National Sanitation Campaign and those that had not. Randomized informational interventions, including hygiene data-sharing and peer-based exposure to latrine platform products, had minimal effects on WTP. In conclusion, current household demand for latrine platform products is too low to achieve national goals for improved sanitation coverage through fully commercial distribution.