. 1986 Spring;7(3):37–51.

Table 11. Means and standard deviations of the total charges-to-total cost ratios and cost proportions, by cost category: 1981.

Cost category	Total charges	Cost in category

	Total cost	Total cost
Total	1.26	1.00
Total	(.0013)	—
Routine	1.05	.501
Routine	(.0011)	(.0123)
Special care	.88	.060
Special care	(.0073)	(.0036)
Operating room	1.19	.091
Operating room	(.0017)	(.0069)
Drugs	1.92	.068
Drugs	(.0064)	(.0007)
Laboratory	1.62	.088
Laboratory	(.0018)	(.0005)
X-ray	1.38	.048
X-ray	(.0013)	(.0003)
Medical supplies	1.54	.052
Medical supplies	(.0042)	(.0007)
Anesthesiology	1.60	.014
Anesthesiology	(.0511)	(.0001)
Other ancillaries	1.70	.078
Other ancillaries	(.0056)	(.0010)

NOTES: DRG is diagnosis-related group. The means reported above are DRG-weighted means of the case weighted means for 358 DRG's. Standard deviations are shown in parentheses.