Hospital ICC (95% CI) | Neighbourhood ICC (95% CI) | Residual ICC (95% CI) | Patients (n) | |
Mortality, unadjusted | 12.5% (7.4 to 17.0) | 0.4% (0.2 to 0.6) | 87.1% (82.4 to 92.3) | 404 675 |
Mortality, adjusted for casemix | 9.3% (5.5 to 12.8) | 0.2% (0.05 to 0.4) | 90.5% (86.9 to 94.4) | 397 170 |
Length of stay, unadjusted | 28.5% (20.6 to 35.0) | 0.3% (0.2 to 0.4) | 71.2% (64.7 to 79.1) | 386 886 |
Length of stay, adjusted for casemix | 23.9% (16.9 to 29.8) | 0.2% (0.1 to 0.2) | 76.0% (70.0 to 82.9) | 379 881 |
Total charges, unadjusted | 32.2% (21.7 to 40.5) | 0.2% (0.1 to 0.3) | 67.5% (59.3 to 78.1) | 269 816 |
Total charges, adjusted for casemix | 22.7% (16.5 to 28.2) | 0.3% (0.2 to 0.4) | 77.0% (71.5 to 83.3) | 266 861 |
Hospital, n=66; Zip code, n=214.
Unadjusted models include random effects only. Adjusted models include fixed effects for patient age, Injury Severity Score, mechanism of injury and number of patient comorbidities.
ICC, intraclass correlation coefficient.