Table 2.
Unadjusted and adjusted Cox models with gamma frailty (total number of events: 469) on mortality in 6872 hospital admissions. The HR of SIPI (> 50 vs ≤50) was estimated separately within 2 time-intervals: before and after day 10 since admission. The effect of SIPI as a continuous variable estimated on a separate multivariable model is also reported
| Factors | Unadjusted (N = 6872) | Adjusted (N = 6872) | ||
|---|---|---|---|---|
| HR (95% CI) | Pvalue | HR (95% CI) | Pvalue | |
| Age, per 10 years | 1.483 (1.363;1.613) | < 0.001 | 1.233 (1.127;1.350) | < 0.001 |
| Gender, Male vs Female | 1.050 (0.875;1.260) | 0.640 | 1.266 (1.051;1.527) | 0.013 |
| Ward, Medium Intensity vs Low | 1.612 (1.333;1.949) | < 0.001 | 1.638 (1.348;1.991) | < 0.001 |
| Access, Emergency vs Ordinary | 5.037 (2.086;12.160) | < 0.001 | 2.732 (1.125;6.637) | 0.026 |
| CCI index, 1 vs 0 | 1.609 (1.238;2.091) | < 0.001 | 1.606 (1.235;2.089) | < 0.001 |
| CCI index, ≥2 vs 0 | 1.654 (1.252;2.186) | < 0.001 | 1.258 (0.950;1.665) | 0.110 |
| SIPI > 50, vs ≤50 at ≤10 days since admission | 7.907 (5.450;11.473) | < 0.001 | 6.576 (4.496;9.617) | < 0.001 |
| SIPI > 50, vs ≤50 at > 10 days since admission | 2.868 (2.048;4.016) | < 0.001 | 2.583 (1.831;3.644) | < 0.001 |
| SIPI, per 10 points in the continuous SIPI score at ≤10 days since admission | 1.634 (1.526;1.749) | < 0.001 | 1.633 (1.519;1.756) a | < 0.001a |
| SIPI, per 10 points in the continuous SIPI score at > 10 days since admission | 1.260 (1.183;1.341) | < 0.001 | 1.255 (1.176;1.339) a | < 0.001a |
aestimated on a separate multivariable model with the same covariates (regression coefficients not shown)
HR hazard ratio, CI confidence interval, CCI Charlson Comorbidity Index, SIPI Informative System of Nursing Performance