A Decision Theoretic Methodology for Seventy Index Development

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Abstract
Severity indices are a key element in evaluation of health programs. But the methodologies used in development of such indices are rarely clearly defined. Moreover, there have been no tests of transportability of the index development methodologies that do exist, so there is no guarantee that panels of physicians convened by different facilitators would produce indices with similar performance characteristics. This paper describes a replicable index development strategy, a heart disease severity index developed by using that methodology, and a test of that methodology's transportability. Key words: severity; utility theory; emer gency medical services; evaluation; multi-attribute utility models. (Med Decis Making 6:27- 35, 1986)