Timothy A. Waidmann

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In September 2002, a technical working group met to resolve previously published inconsistencies across national surveys in trends in activity limitations among the older population. The 12-person panel prepared estimates from five national data sets and investigated methodological sources of the inconsistencies among the population aged 70 and older from(More)
This article uses the Asset and Health Dynamics Among the Oldest Old (AHEAD) study to examine the extent to which observed differences in the prevalence of chronic conditions and functional limitations between Black and White adults (aged 70+) in the United States can be attributed to differences in various aspects of socioeconomic status (SES) between(More)
BACKGROUND Although the general relations between race, socioeconomic status, and mortality in the United States are well known, specific patterns of excess mortality are not well understood. METHODS Using standard demographic techniques, we analyzed death certificates and census data and made sex-specific population-level estimates of the 1990 death(More)
OBJECTIVES This article used a new data source to examine the issue of disability trends among elderly persons and examined the potential implications of these trends on future health and long-term care needs. METHODS We used the 1992-1996 Medicare Current Beneficiary Survey to examine time trends in rates of activities of daily living and instrumental(More)
We calculated population-level estimates of mortality, functional health, and active life expectancy for black and white adults living in a diverse set of 23 local areas in 1990, and nationwide. At age 16, life expectancy and active life expectancy vary across the local populations by as much as 28 and 25 years respectively. The relationship between(More)
STUDY OBJECTIVE To describe variation in levels and causes of excess mortality and temporal mortality change among young and middle aged adults in a regionally diverse set of poor local populations in the USA. DESIGN Using standard demographic techniques, death certificate and census data were analysed to make sex specific population level estimates of(More)
The increase in undocumented immigration between 1999 and 2007 contributed to an increase in the number of uninsured people in the United States. During this period, the number of undocumented immigrants increased from an estimated 8.5 million to 11.8 million, leading to an estimated additional 1.8 million uninsured. These uninsured and undocumented(More)
This article updates trends from five national U.S. surveys to determine whether the prevalence of activity limitations among the older population continued to decline in the first decade of the twenty-first century. Findings across studies suggest that personal care and domestic activity limitations may have continued to decline for those ages 85 and older(More)
BACKGROUND Although geographic differences in Medicare spending are widely considered to be evidence of program inefficiency, policymakers need to understand how differences in beneficiaries' health and personal characteristics and specific geographic factors affect the amount of Medicare spending per beneficiary before formulating policies to reduce(More)
OBJECTIVES To investigate the consequences of endogeneity bias on the estimated effect of having health insurance on health at age 63 or 64, just before most people qualify for Medicare, and to simulate the implications for total and public insurance (Medicare and Medicaid) spending on newly enrolled beneficiaries in their first years of Medicare coverage.(More)