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Table 3 Cox proportional hazard analysis of the covariates for predicting composite endpoints including cardiovascular events and 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) 1.04 (1.00 to 1.09) 0.044
Gender (M) 1.25 (0.73 to 2.25) 0.419
Duration of HD (per 1 year) 1.03 (0.97 to 1.09) 0.357
Albumin (per 1 g/dL) 0.16 (0.05 to 0.64) 0.011
Creatinine (per 1 mg/dL) 0.67 (0.52 to 0.86) 0.001
Uric acid (per 1 mg/dL) 0.80 (0.51 to 1.21) 0.294
Corrected calcium (per 1 mg/dL) 1.68 (0.74 to 3.64) 0.211
Phosphate (per 1 mg/dL) 0.60 (0.34 to 0.96) 0.033
Ca × P (per 1 (mg/dL)2) 0.96 (0.91 to 1.01) 0.084
Total cholesterol (per 1 mg/dL) 0.99 (0.97 to 1.00) 0.141
Triglyceride (per 1 mg/dL) 1.01 (1.00 to 1.02) 0.153
C-reactive protein (per 1 mg/dL) 1.44 (0.84 to 2.05) 0.154
Hemoglobin (per 1 g/dL) 0.52 (0.27 to 0.98) 0.042
Hypertension (Y) 1.40 (0.81 to 2.67) 0.239
Diabetes mellitus (Y) 0.62 (0.15 to 1.40) 0.299
ABI (per 0.1)a 0.65 (0.50 to 0.86) 0.025
ΔABI (per 0.1)a 0.73 (0.61 to 0.90) 0.005
  1. ΔABI = ABI in 2011 − ABI in 2005
  2. HD hemodialysis, Ca calcium, P phosphate, ABI ankle-brachial blood pressure index
  3. a ABI and ΔABI: smaller values among both legs