Comparison of responses to SF-36 Health Survey questions with one-week and four-week recall periods.

OBJECTIVE To compare the measurement properties of acute (one-week recall) and standard (four-week recall) versions of SF-36 Health Survey (SF-36) scale scores. DATA SOURCES SF-36 data collected from 142 participants (60% female, average age 39) in a clinical trial of an asthma medication: 74 patients randomized to the acute form and 68 to the standard… (More)