Table 8. Charge-based case-mix index (CMI) minus cost-based CMI, by bed size within urban and rural location: 1985-87.
| Hospital characteristic | Percent difference in case-weighted CMI | ||||
|---|---|---|---|---|---|
|
| |||||
| 1985 | Relative weight | CMI-adjusted weight | |||
|
|
|
||||
| 1986 | 1987 | 1986 | 1987 | ||
| All hospitals | 0.00 | 0.00 | 0.00 | 0.22 | 0.30 |
| Rural: | |||||
| All rural | −0.77 | −0.77 | −0.88 | −0.56 | −0.59 |
| 0-49 beds | −1.27 | −1.26 | −1.40 | −1.03 | −1.10 |
| 50-99 beds | −0.94 | −0.93 | −1.07 | −0.71 | −0.77 |
| 100-149 beds | −0.67 | −0.68 | −0.86 | −0.47 | −0.56 |
| 150-199 beds | −0.57 | −0.65 | −0.76 | −0.43 | −0.46 |
| 200 or more beds | −0.30 | −0.32 | −0.32 | −0.11 | −0.03 |
| Urban: | |||||
| All urban | 0.22 | 0.19 | 0.22 | 0.41 | 0.51 |
| 0-99 beds | −0.56 | −0.58 | −0.66 | −0.37 | −0.36 |
| 100-199 beds | −0.23 | −0.24 | −0.36 | −0.03 | −0.07 |
| 200-299 beds | 0.07 | 0.01 | 0.01 | 0.23 | 0.31 |
| 300-399 beds | 0.18 | 0.16 | 0.18 | 0.38 | 0.48 |
| 400 or more beds | 0.65 | 0.64 | 0.74 | 0.86 | 1.04 |
| Teaching status: | |||||
| No teaching | −0.34 | −0.35 | −0.39 | −0.14 | −0.10 |
| Minor teaching | 0.41 | 0.38 | 0.43 | 0.59 | 0.73 |
| Major teaching | 0.95 | 1.04 | 1.10 | 1.25 | 1.40 |
| Disproportionate-share status: | |||||
| Yes | 0.25 | 0.25 | 0.27 | 0.47 | 0.57 |
| No | −0.12 | −0.13 | −0.14 | 0.08 | 0.15 |
SOURCE: Carter, G.M., and Farley, D.O., RAND, Santa Monica, California, 1991.