A discussion of item response theory and its applications in health status assessment.
Cella
D
D
Center on Outcomes Research and Education, Evanston Northwestern Healthcare, Illinois 60201, USA. d-cella@nwu.edu
Chang
C H
CH
D000203:Activities of Daily Living; D003625:Data Collection / Q000379:methods; D006305:Health Status Indicators; D006801:Humans; D015233:Models, Statistical; D011788:Quality of Life; D011795:Surveys and Questionnaires