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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