Welfare Implications of Learning Through Solicitation versus Diversification in Health Care

This paper uses Roy's model of sorting behavior to study welfare implication of current health care data production infrastructure that relies on solicitation of research subjects. We show that due to severe adverse-selection issues, directionality of bias cannot be established and welfare may本文采用罗伊分类行为模型（Roy's model of sorting behavior），研究当前依赖招募研究受试者的医疗数据生产基础设施的福利影响。研究表明，由于存在严重的逆向选择问题，偏差的方向性无法确定，且福利可能