Table 2.
Multivariate Analysis for Changes in Case Mix Index (CMI) Over Time
| Adjusted differences between the means (P value) | ||||
|---|---|---|---|---|
| Unadjusted change in mean CMI 1996 vs. 2009 (P value) | Overall | Public only | Private only | |
| Private vs. public | 0.15 vs. 0.07 (0.0003)* | 0.09 (<0.0001)* | ||
| Teaching vs. not | 0.16 vs. 0.12 (0.10) | 0.03 (0.30) | 0.02 (0.66) | 0.03 (0.38) |
| Trauma 1 vs. not | 0.21 vs. 0.13 (0.09) | 0.09 (0.11) | 0.04 (0.41) | 0.11 (0.19) |
| Increasing # of beds | 0.013/100 beds (0.03)* | 0.00003 (0.65) | 0.0001 (0.26) | 0.00001 (0.87) |
*
P<0.05.