A Framework for Assessing Productivity Loss from Schistosomiasis
提出一个模型，用负二项分布衡量血吸虫感染严重程度，并设计方法估计分布参数，以更准确评估局部生产力损失，为控制项目的成本效益研究提供基础。
The severity of the parasitic infection schistosomiasis, and hence the magnitude of the productivity losses caused, both vary a great deal across exposed populations. In the model of this paper, severity is measured in terms of a unit of infectivity assigned a negative binomial distribution among the members of an exposed group. A methodology is devised for estimating the parameters of the distribution on a site-specific basis allowing for more accurate assessment of localized productivity losses than have previously been obtained. The purpose in developing the model and estimation methodology is to provide a foundation for cost-benefit studies of schistosomiasis control projects.