Jeffrey D. Williamson

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OBJECTIVES To describe and compare patterns of change in self-rated health for older adults before death and before and after stroke, myocardial infarction, congestive heart failure, cardiac procedure, hospital admission for cancer, and hip fracture. DESIGN "Event cohort," measuring time in months before and after the event. SETTING Four U.S.(More)
Studies of interventions that are intended to improve patients' health are often evaluated with survival as the primary outcome, even when a measure adjusted for quality of survival, such as years of healthy life (YHL), would seem more appropriate. The purpose of this article is to determine whether studies based on survival are more or less powerful than(More)
OBJECTIVE To examine the change in fall rates after relocation of nursing home residents from one facility to another and to identify resident risk factors for changes in falls following relocation. DESIGN Retrospective review of incident reports to identify falls, followed by chart review of a longitudinal cohort. SETTING An academic nursing home whose(More)
Cost-effectiveness studies often need to compare the cost of a program to the lifetime benefits of the program, but estimates of lifetime benefits are not routinely available, especially for older adults. We used data from two large longitudinal studies of older adults (ages 65-100) to estimate transition probabilities from one health state to another, and(More)
Importance On the basis of observational studies, the use of thiazide diuretics for the treatment of hypertension is associated with reduced fracture risk compared with nonuse. Data from randomized clinical trials are lacking. Objective To examine whether the use of thiazide diuretics for the treatment of hypertension is associated with reduced fracture(More)
BACKGROUND Patient characteristics are associated with adherence, which has implications for planning clinical research or designing payment systems that reward superior outcomes. It is unclear to what extent clinician efforts to improve adherence can attenuate these associations. METHODS To identify factors predicting visit and medication adherence in(More)
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