A study of the reliability, validity, and precision of scales to measure chronic functional limitations due to poor health - Stewart, Anita L; Brook, Robert H. (Robert Henry), 1943-; Ware, John E; Research and Development Corporation (Santa Monica, California : Rand Corporation, 1977)
Includes bibliographical references (pages 22-24)
Keywords: Medical care -- United States -- Evaluation; Chronically ill -- Care