Table 3: Results of univariate and multivariate Cox regression analyses for overall survival in dialysis patients aged ≥80 years.

Univariate analysisMultivariate analysis
P valueHR95.0% CIP valueHR95.0% CI

Age (years)0.443 1.024 0.96–1.09
Cerebro-cardiovascular disease0.163 1.327 0.89–1.98
Diabetes mellitus0.976 0.994 0.67–1.46
ECOG-PS0.000 1.327 1.15–1.54ECOG-PS0.004 1.271.08–1.49
Mean blood pressure (mmHg)0.164 0.994 0.99–1.01
Body mass index0.060 0.961 0.92–1.01
Hemoglobin (g/L)0.231 1.070 0.96–1.20Hemoglobin0.040 1.131.01–1.28
BUN (mg/dL)0.177 1.004 0.99–1.01
eGFR (mL/min./1.73 m2)0.782 1.006 0.97–1.05
Albumin (mg/dL)0.013 0.652 0.47–0.91Albumin0.067 0.710.48–1.03
Phosphorus (mg/dL)0.068 1.132 0.99–1.29
Potassium (mEq/L)0.265 1.133 0.91–1.41
Calcium (mg/dL)0.861 1.024 0.79–1.33
Antihypertensive agents0.275 1.324 0.80–2.19