TY - BOOK AU - Manning,Willard G. AU - Newhouse,Joseph P. AU - Ware,John E. ED - Rand Corporation. ED - United States. TI - The status of health in demand estimation: beyond excellent, good, fair, and poor T2 - Health insurance experiment series SN - 0833002929 AV - RA408.5 .M3 1981 PY - 1981/// CY - Santa Monica, CA PB - RAND KW - Health status indicators KW - Health surveys KW - Medical care KW - Utilization N1 - "August 1981."; Includes bibliographical references (p. 59-62); Also available on the internet via WWW in PDF format N2 - This study addresses two issues. (1) What can one gain by using more comprehensive measures of health status in demand estimation than a common single item measure? Would you rate your health as excellent, good, fair, or poor? The authors find that by using multidimensional and less-coarse health status measures they achieve an increase in precision approximately equivalent to a 10 percent increase in sample size. (2) What is the consequence of employing postdiction (i.e., predicting utilization from health status measured after the fact) rather than prediction? Using a simple, but plausible, model, the authors show that such measures cause the estimates to be inconsistent; the direction of the inconsistency generally cannot be signed a priori. Empirically the direction is generally away from zero UR - http://www.rand.org/pubs/reports/R2696-1/ ER -