Table 3 Multivariate survival analysis (Cox proportional hazards method) for patients with vertical growth phase melanoma of the nodular subtype, using tumor-related death as end point

From: Loss of BMI-1 expression is associated with clinical progress of malignant melanoma

Variables

Categories

N

HR a

95% CI

P-valueb

Clark's level of invasion

II, III, IV

82

1

  
 

V

24

2.5

1.3–4.9

0.006

BMI-1 expression (6C9)

Strong

27

1

  
 

Weak

79

2.9

1.1–3.7

0.024

p16 expression

Highc

51

1

  
 

Low

55

1.9

1.1–7.5

0.028

  1. aHazard ratio.
  2. blratio test.
  3. cCut-point median SI.