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Table 6 Crude and adjusted HRs of mortality, by diet, Charlson index, proteinuria, and GFR (Cox analysis) (LPD-KA and LPD-PFF)

From: Diet as a system: an observational study investigating a multi-choice system of moderately restricted low-protein diets

  n/N Crude RR (95% CIs) p value Adjusted HR (95% CIs) p value
Diet
 LPD-KA 37/215 1 (−) <0.0001 1 (−) 0.5264
 LPD-PFF 59/159 2.16 (1.51–3.08)   1.15 (0.75–1.75)
Charlson index <0.0001
 <7 12/165 1 (−) <0.0001 1 (−)
 ≥7 84/209 5.53 (3.13–9.77)   6.11 (3.28–11.36)
Proteinuria
(g/day)    <0.0001   0.2107
  < 1 69/207 1 (−)   1 (−)
  ≥ 1 27/167 0.49 (0.33–0.72)   0.75 (0.48–1.18)
GFR (ml/m) 0.2425
  < 30 78/291 1 (−) 0.3436 1 (−)
  ≥ 30 18/83 0.81 (0.72–1.27)   0.74 (0.44–1.23)
  1. GFR-EPI Glomerular filtration rate (EPI formula), RR Relative risk, HR Hazard ratio
  2. statistically significant OR in bold