Table 4:
Comparison of hospital rankings using different measures of death or urgent readmission within 30 days
| Method 1 | Method 2 | Ranking | Weighted κ† (95% CI) | |||
|---|---|---|---|---|---|---|
| Agreement among measures* | Disagreement among measures (%), n = 162 | |||||
| Top 10%, n = 16 | Middle 80%, n = 130 | Bottom 10%, n = 16 | ||||
| Age-, sex-adjusted, all admissions | Age-, sex-adjusted, single admission/ patient | 13 | 125 | 13 | 12 (7.4) | 0.79 (0.64–0.94) |
| Complete adjustment, all admissions | 6 | 115 | 11 | 30 (18.5) | 0.62 (0.43–0.80) | |
| Complete adjustment, single admission/patient | 6 | 114 | 9 | 34 (21.0) | 0.49 (0.29–0.69) | |
| Age-, sex-adjusted, single admission/patient | Complete adjustment, all admissions | 7 | 113 | 8 | 34 (21.0) | 0.44 (0.23–0.64) |
| Complete adjustment, single admission/patient | 7 | 115 | 10 | 30 (18.5) | 0.56 (0.37–0.75) | |
| Complete adjustment, all admissions | Complete adjustment, single admission/patient | 9 | 117 | 9 | 27 (16.7) | 0.51 (0.31–0.71) |
Note: CI = confidence interval.
*
Determined for ranking categories (top 10%, middle 80% and bottom 10%) and the proportion of hospitals having different categorizations using the 2 methods.
†
Presents the agreement beyond that expected by chance, taking into account the degree of disagreement between the measures.