RT Book, Section A1 Wittink, Harriët A1 Goudas, Leonidas C. A1 Strassels, Scott A1 Carr, Daniel B. A2 Warfield, Carol A. A2 Bajwa, Zahid H. SR Print(0) ID 3414745 T1 Chapter 7. Outcome Measurements in Pain Medicine T2 Principles & Practice of Pain Medicine, 2e YR 2004 FD 2004 PB The McGraw-Hill Companies PP New York, NY SN 9780071443494 LK accessanesthesiology.mhmedical.com/content.aspx?aid=3414745 RD 2024/03/29 AB Central to the evaluation of health care is the measurement of health. Until the first part of the twentieth century, health was defined as the absence of disease and was measured in terms of morbidity and mortality. This simple approach to health status was rejected in 1948 with the expansion of the concept of health by the World Health Organization (WHO), which defined health as, “A state of complete physical, mental and social well being and not merely the absence of disease or infirmity.”1 This definition reflected the multidimensionality of health and considered not only biologic markers, but also the ability to perform physically, psychologically, and socially in the everyday environment.