Table 5. Comparison of differences in weights with results of other studies: 1985-87.

Year	Number and percent of cases with absolute differences less than or equal to 5 and 10 percent
	5 percent		10 percent
	Number of cases	Percent of cases	Number of cases	Percent of cases
1985	1,247,354	70.4	1,708,427	96.4
1986	1,200,708	66.6	1,696,615	94.1
1987	1,173,972	66.3	1,658,672	93.7
Other studies and year studied
Cotterill, Bobula, and Connerton (1981)	1,651,603	89.5	1,834,828	99.4
Rogowski and Byrne (1984)	680,818	71.9	914,006	96.6
Price (1986)	5,619,499	62.2	8,328,826	92.1

NOTE: All results based on a case-weighted average diagnosis-related group weight.

SOURCE: Upper panel source is Carter, G.M., and Farley, D.O., RAND, Santa Monica, California, 1991; lower panel sources as shown.