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Table 2 Cox proportional hazard analysis of the covariates for predicting mortality (univariate analysis)

From: Changes in the ankle-brachial blood pressure index among hemodialysis patients

Parameters (n = 61) Hazard ratio (95 % CI) P value
Age (per 1 year) 1.06 (1.00 to 1.13) 0.048
Gender (M) 0.77 (0.34 to 1.64) 0.493
Duration of HD (per 1 year) 1.00 (0.91 to 1.09) 0.969
Albumin (per 1 g/dL) 0.12 (0.02 to 0.82) 0.032
Creatinine (per 1 mg/dL) 0.49 (0.32 to 0.71) <0.001
Uric acid (per 1 mg/dL) 0.42 (0.20 to 0.80) 0.008
Corrected calcium (per 1 mg/dL) 1.14 (0.42 to 2.81) 0.789
Phosphate (per 1 mg/dL) 0.26 (0.09 to 0.65) 0.002
Ca × P (per 1 (mg/dL)2) 0.98 (0.92 to 1.03) 0.446
Total cholesterol (per 1 mg/dL) 1.00 (0.98 to 1.02) 0.919
Triglyceride (per 1 mg/dL) 1.00 (0.98 to 1.02) 0.916
C-reactive protein (per 1 mg/dL) 1.04 (0.29 to 1.75) 0.912
Hemoglobin (per 1 g/dL) 0.60 (0.25 to 1.44) 0.250
Hypertension (Y) 2.15 (0.89 to 9.36) 0.095
Diabetes mellitus (Y) 0.95 (0.22 to 2.29) 0.918
ABI (per 0.1)a 0.43 (0.25 to 0.64) <0.0001
ΔABI (per 0.1)a 0.62 (0.49 to 0.79) <0.001
  1. ΔABI = ABI in 2011 − ABI in 2005
  2. HD hemodialysis, Ca calcium, P phosphate, ABI ankle-brachial blood pressure index
  3. aABI and ΔABI: smaller values among both legs