Table 2. Number of diagnosis-related groups and number and percent distribution of cases, by percent by which charge weights differ from cost weights.

Percent by which charge weights differ from cost weights	Number of DRG's	Number of cases	Percent distribution of cases
Total	358	1,845,267	100.0
15-20 percent less	0	0	0.0
10-15 percent less	0	0	0.0
5-10 percent less	12	98,232	5.3
0-5 percent less	136	976,883	52.9
0-5 percent more	160	674,720	36.6
5-10 percent more	41	84,993	4.6
10-15 percent more	8	9,960	0.5
15-20 percent more	1	479	0.0

NOTES: DRG's are diagnosis-related groups. MEDPAR is Medicare provider analysis and review. Data are based on the 358 DRG's for which sufficient information was available on the 1981 MEDPAR file to compute relative weights.