Table 4 Meta-analysis of the subgroup including studies performed in NSCLC treated by surgery, 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 NSCLC: surgical stages ( n =7)

Study

Method

Threshold

QS (%)

N Pts

Bcl-2+ (%)

HR

95% CI

Fontanini et al (1995, 1996)

IHC-clone 124

>1

45

89

66

0.28

0.14–0.55

Ghosh et al (1999)

IHC-clone 124

>50

41

134

31

0.60

0.40–0.90

Higashiyama et al (1997)

IHC-clone 124

>10

52

174

21

0.47

0.20–1.14

Huang et al (1999)

IHC-clone 124

>50

70

203

39

0.46

0.26–0.82

Ishida et al (1997)

IHC-clone 124

>10

64

114

38

0.23

0.06–0.86

Kim et al (1998)

IHC-clone 124

NM

79

NM

NM

2.50

0.90–7.1

Laudanski et al (1999)

IHC-clone 124

NM

68

84

46

0.41

0.21–0.79

Overall (fixed-effects model)

  

798

37

0.50

0.39–0.65

Overall (random-effects model)

    

0.50

0.33–0.77

χ2 statistic for heterogeneity=14.98, 6 df, P=0.02

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