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Timothy Waidmann is a senior fellow in the Health Policy Center at the Urban Institute. He has over 20 years of experience designing and conducting studies on varied health policy topics, including disability and health among the elderly; Medicare and Medicaid policy; disability and employment; public health and prevention; health status and access to health care in vulnerable populations; health care utilization among high-cost, high-risk
Doug Wissoker, a senior fellow with the Statistical Methods Group at the Urban Institute, is a labor economist with expertise in statistical and survey methods. Since joining Urban in 1988, he has collaborated with researchers on a wide range of topics, including evaluation of welfare reform demonstrations and studies of survey nonresponse bias, the sample for a survey of coastal fishing households in Sierra Leone, and the design of weights for