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Table 3 Results of the Cox proportional hazards regression on time to death and time to RRT inception

From: Temporal validation of the CT-PIRP prognostic model for mortality and renal replacement therapy initiation in chronic kidney disease patients

  HR (95% CI) p-value
Mortality
 Validation cohort 1.085 (0.886–1.328) 0.429
  1 0.298 (0.237–0.376) <0.001
  2 0.932 (0.768–1.131) 0.476
  3 1.379 (0.640–2.974) 0.412
  4 0.122 (9.058–0.257) <0.001
  5 0.604 (0.281–1.300) 0.197
  6 0.989 (0.723–1.354) 0.945
  7 Ref.  
 interactions
  V 1 1.766 (0.948–3.291) 0.073
  V 2 0.942 (0.721–1.230) 0.658
  V 3 1.129 (0.480–2.655) 0.782
  V 4 0.526 (0.107–2.587) 0.429
  V 5 0.878 (0.285–2.710) 0.821
  V 6 0.886 (0.553–1.418) 0.614
  V 7 Ref.  
RRT inception
 Validation cohort 1.196 (0.705–2.029) 0.508
  1 0.308 (0.208–0.455) <0.001
  2 Ref.  
  3 3.848 (2.726–5.433) <0.001
  4 0.876 (0.531–1.446) 0.605
  5 0.948 (0.470–1.914) 0.882
  6 0.395 (0.244–0.640) <0.001
  7 0.442 (0.262–0.744) 0.002
 interactions
  V 1 0.765 (0.383–1.530) 0.449
  V 2 Ref.  
  V 3 0.567 (0.247–1.301) 0.181
  V 4 0.441 (0.257–0.756) 0.003
  V 5 0.230 (0.080–0.663) 0.007
  V 6 0.379 (0.155–0.929) 0.034
  V 7 0.389 (0.183–0.827) 0.014