Table 6 Meta-analysis of the studies performed in squamous cell cancer, with their characteristics

From: Role of Bcl-2 as a prognostic factor for survival in lung cancer: a systematic review of the literature with meta-analysis

Group of squamous cell cancer ( n =5)

Study

Method

Threshold

QS (%)

N Pts

Bcl-2+ (%)

HR

95% CI

Chen et al (1999)

IHC-clone 124

NM

33

40

42

0.18

0.03–0.88

Ghosh et al (1999)

IHC-clone 124

>50

41

134

31

0.6

0.40–0.89

Higashiyama et al (1997)

IHC-clone 124

>10

52

67

31

0.32

0.08–1.25

O'Neill et al (1996)

IHC-clone 124

>1

55

54

35

1.34

0.52–3.44

Pezzella et al (1993)

IHC-clone 100

NM

65

75

27

0.42

0.20–0.91

Overall (fixed-effects model)

  

370

32

0.57

0.41–0.78

Overall (random-effects model)

    

0.54

0.33–0.89

χ2 statistic for heterogeneity=6.67, 4 df; P=0.15

  1. The meaning of the symbols is described in Table 3.