Skip to main content

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

From: Complexity of nursing care at 24 h from admission predicts in-hospital mortality in medical units: a cohort study

FactorsUnadjusted (N = 6872)Adjusted (N = 6872)
HR (95% CI)PvalueHR (95% CI)Pvalue
Age, per 10 years1.483 (1.363;1.613)< 0.0011.233 (1.127;1.350)< 0.001
Gender, Male vs Female1.050 (0.875;1.260)0.6401.266 (1.051;1.527)0.013
Ward, Medium Intensity vs Low1.612 (1.333;1.949)< 0.0011.638 (1.348;1.991)< 0.001
Access, Emergency vs Ordinary5.037 (2.086;12.160)< 0.0012.732 (1.125;6.637)0.026
CCI index, 1 vs 01.609 (1.238;2.091)< 0.0011.606 (1.235;2.089)< 0.001
CCI index, ≥2 vs 01.654 (1.252;2.186)< 0.0011.258 (0.950;1.665)0.110
SIPI > 50, vs ≤50 at ≤10 days since admission7.907 (5.450;11.473)< 0.0016.576 (4.496;9.617)< 0.001
SIPI > 50, vs ≤50 at > 10 days since admission2.868 (2.048;4.016)< 0.0012.583 (1.831;3.644)< 0.001
SIPI, per 10 points in the continuous SIPI score at ≤10 days since admission1.634 (1.526;1.749)< 0.0011.633 (1.519;1.756) a< 0.001a
SIPI, per 10 points in the continuous SIPI score at > 10 days since admission1.260 (1.183;1.341)< 0.0011.255 (1.176;1.339) a< 0.001a
  1. aestimated on a separate multivariable model with the same covariates (regression coefficients not shown)
  2. HR hazard ratio, CI confidence interval, CCI Charlson Comorbidity Index, SIPI Informative System of Nursing Performance