Table 2. Number and percent of diagnosis-related groups (DRGs) and cases with absolute difference between cost- and charge-based weights of less than or equal to 5 and 10 percent, by method of recalibration.

Weight recalibration method	5 percent				10 percent
	DRGs		Cases		DRGs		Cases
	Number	Percent	Number	Percent	Number	Percent	Number	Percent
Cotterill1	296	82.7	1,651,603	89.5	349	97.5	1,834,828	99.4
Original Current	251	71.5	606,154	63.9	332	94.6	895,399	94.5
Hospital relative	270	76.9	680,818	71.9	338	96.3	914,006	96.6
value	289	82.3	719,462	76.0	350	99.7	946,358	99.9

¹From data in Table 2 appearing in Cotterill, Bobula, and Connerton (1986); total number of DRGs was 358, total number of cases was 1,845,267.

SOURCE: Health Care Financing Administration, Bureau of Data Management and Strategy: Data from the 1984 Medicare Cost Report File and from the 1984 Medicare 20-Percent Stay File.