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Table 2 Results of Cox proportional hazard analyses

From: Bilirubin as a prognostic marker in patients with pulmonary arterial hypertension

 

Univariate

Model 1

Model 2

Variables

p

Hazard ratio

(95% CI)

p

Hazard ratio

(95% CI)

p

Hazard ratio

(95% CI)

Age, year

0.51

1.01

(0.98--1.04)

    

Women

0.71

0.78

(0.22--2.83)

    

CTD-associated

0.29

0.49

(0.16--1.46)

    

Mean RA pressure, mm Hg*

0.05

1.19

(1.00--1.43)

    

Mean PA pressure, mm Hg*

0.34

0.99

(0.95--1.02)

    

Cardiac index, L/min/m2

0.70

1.14

(0.58--2.24)

    

WHO functional class

<0.001

4.95

(2.17--11.32)

0.009

3.30

(1.35--8.03)

  

Doppler RV index

0.17

3.03

(0.61--14.99)

    

BNP, lognormal pg/dL

0.001

2.79

(1.55--5.04)

  

0.004

2.35

(1.31 -- 4.21)

Elevated AST

0.34

0.37

(0.05--2.84)

    

Elevated ALT

0.30

0.34

(0.04--2.60)

    

Elevated LDH

0.17

2.10

(0.73--6.12)

    

Hyperbilirubinemia

<0.001

13.31

(3.91--45.30)

0.02

4.81

(1.24--18.73)

  

Bilirubin, mg/dL

0.001

3.64

(1.73--7.68)

  

0.02

2.28

(1.15 -- 4.52)

  1. BNP = brain natriuretic peptide; CTD = connective tissue disorder; PA = pulmonary artery, RV = right ventricle, WHO = World Health Organization. *n = 26, Bivariate model using WHO functional class and hyperbilirubinemia, Bivariate model using BNP and bilirubin concentration.