Table 2. Percent of admissions categorized by typical diagnosis-related groups with different characteristic variation among 30 hospital market areas in Maine: 1980-82.

Variation	Typical diagnosis-related group	Percent admissions	Cumulative percent
Low	Hernia	1.1	1.1
Moderate	Appendectomy	8.9	10.1
High	Hysterectomy	42.3	52.4
Very high I	Disc removal	31.7	84.1
Very high II	Tonsillectomy	15.9	100.0

NOTE: The number of admissions on which percents are based is 428,056.

SOURCE: (Wennberg, McPherson, and Caper, 1984).