Table 2 Methodological assessment by ELCWP score, according to trials characteristics: (A) all trials and (B) evaluable trials for meta-analysis

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

  

Global score (%)

Design (/10)

Laboratory methodology (/10)

Generalisability (/10)

Results analysis (/10)

(A) All trials

Total (n=28)

All studies

54.6

4.0

6.1

6.7

5.0

 

Patient number P-value

0.0015

0.03

0.03

0.03

0.008

 

Evaluable for the MA (n=25)

54.6

4.0

6.4

6.7

5.0

 

Not evaluable for the MA (n=3)

54.2

5.0

7.8

6.7

5.0

 

P-value

0.53

0.28

0.17

0.91

0.50

 

Positive (n=11)

51.5

4.0

5.7

6.6

5.0

 

Negative (n=17)

54.6

5.0

7.14

6.6

5.0

 

P-value

0.27

0.07

0.44

0.48

0.94

 

IHC Ab clone 100 (n=5)

59.4

4.0

5.0

6.7

7.5

 

IHC Ab clone 124 (n=21)

52.1

4.0

6.1

6.7

5.0

 

P-value

0.25

0.81

0.54

0.54

0.08

(B) Evaluable trials for meta-analysis

Evaluable for the MA (n=25)

All studies

54.6

4.0

6.4

6.7

5.0

 

Patient number P-value

0.004

0.09

0.03

0.045

0.01

 

Positive (n=11)

51.5

4.0

5.7

6.7

5.0

 

Negative (n=14)

57.0

5.0

6.8

7.1

5.6

 

P-value

0.35

0.01

0.64

0.53

0.80

 

IHC Ab clone 100 (n=5)

59.4

4.0

5.0

6.7

7.5

 

IHC Ab clone 124 (n=18)

50.3

4.0

5.7

6.7

5.0

 

P-value

0.10

0.07

0.37

0.07

1.0

  1. Score distributions are summarised by median values. Positive=studies identifying Bcl-2 positivity as significant good prognostic factor for survival; negative=studies reporting nonsignificant results, or associating Bcl-2 positivity with poor survival; MA=meta-analysis; IHC=immunohistochemistry. The values in bold were significant.