Table 1 Hazard ratios from the Cox PH model for the ovarian dataset

From: Survival Analysis Part II: Multivariate data analysis – an introduction to concepts and methods

 

Univariate analysis

Multivariate analysis

Covariate

Coefficient ( bi)

HR [exp( bi)]

95% CI

P -value

Coefficient ( bi)

HR [exp( bi)]

95% CI

P -value

FIGO stage

0.809

2.24

(2.03–2.48)

<0.001

0.731

2.08

(1.82–2.37)

<0.001

Histology

   

<0.001

   

<0.001

 Serous

(0.000)

(1.00)

  

(0.000)

(1.00)

  

 Mucinous

−0.727

0.48

(0.38–0.61)

 

−0.422

0.66

(0.50–0.85)

 

 Endometroid

−1.162

0.31

(0.22–0.45)

 

0.198

1.22

(0.80–1.85)

 

 Clear cell

−0.343

0.71

(0.52–0.97)

 

0.342

1.41

(0.99–2.00)

 

 Adenocarcinoma

0.119

1.13

(0.74–1.72)

 

0.501

1.65

(0.91–2.99)

 

 Undifferentiated

0.390

1.48

(0.81–2.70)

 

0.746

2.11

(1.03–4.29)

 

 Mixed mesodermal

0.614

1.85

(1.28–2.66)

 

0.789

2.20

(1.45–3.35)

 

Grade

   

<0.001

   

<0.001

 1

(0.000)

(1.00)

  

(0.000)

(1.00)

  

 2

1.116

3.05

(1.90–4.91)

 

0.885

2.42

(1.40–4.19)

 

 3

1.650

5.20

(3.31–8.18)

 

0.885

2.42

(1.40–4.18)

 

Absence of ascites

−0.798

0.45

(0.37–0.55)

<0.001

−0.396

0.67

(0.54–0.84)

<0.001

Age (per 5-year increase)

0.153

1.17

(1.12–1.21)

<0.001

0.133

1.14

(1.09–1.19)

<0.001

  1. HR=hazard ratio, CI=confidence interval.
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