PMID- 2533174 OWN - NLM STAT- MEDLINE DCOM- 19900314 LR - 20071115 IS - 0046-9580 (Print) IS - 0046-9580 (Linking) VI - 26 IP - 4 DP - 1989 Winter TI - Measuring severity of illness: a comparison of interrater reliability among severity methodologies. PG - 483-92 AB - Methods for measuring illness severity are receiving increasing attention from payers, purchasers, and others interested in the equity and financial incentives of prospective payment systems, as well as from those concerned with the use of mortality rates and other outcomes to measure quality of care. Several methodologies have been proposed for measuring the severity of illness of patients admitted to hospitals. When choosing among the available measures, one characteristic of interest is reliability. In this paper, we present a comparative evaluation of interrater reliability among four severity measures--APACHE II, MedisGroups, Patient Management Categories (PMCs), and Disease Staging Q-Scale--as well as for the Diagnosis Related Groups (DRG) classification system. The results show APACHE II, MedisGroups, and DRGs to be highly reliable, with Inter-Rater Reliability Coefficient (RI) values greater than .8. PMCs and Disease Staging Q-Scale were able to achieve fair-to-good levels of reliability. Results are consistent regardless of which reliability statistics are used. FAU - Thomas, J W AU - Thomas JW AD - School of Public Health, University of Michigan, Ann Arbor 48109-2029. FAU - Ashcraft, M L AU - Ashcraft ML LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - Inquiry JT - Inquiry : a journal of medical care organization, provision and financing JID - 0171671 SB - IM MH - Evaluation Studies as Topic MH - *Health Services Research MH - Information Systems MH - Reproducibility of Results MH - Research Design MH - *Severity of Illness Index MH - Statistics as Topic MH - United States EDAT- 1989/01/01 00:00 MHDA- 1989/01/01 00:01 CRDT- 1989/01/01 00:00 PHST- 1989/01/01 00:00 [pubmed] PHST- 1989/01/01 00:01 [medline] PHST- 1989/01/01 00:00 [entrez] PST - ppublish SO - Inquiry. 1989 Winter;26(4):483-92.