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Table 2 Raw data and methodological quality of included trials

From: Systematic review and meta-analysis of Endostar (rh-endostatin) combined with chemotherapy versus chemotherapy alone for treating advanced non-small cell lung cancer

Studies

Region

Sequence generation

Allocation concealment

Blind

Outcome data

Selective outcome reporting

Other sources of bias

ITT

Risk of bias

Wang JW 2005[11]

Multi-center

Random number table (SAS)

Insufficient

Clear

No

No

Unclear

Yes

Low risk of bias

Yang L 2005[12]

Multi-center

Random number table (SPSS)

Unclear

Unclear

Yes

No

Unclear

No

Unclear risk of bias

Cai L 2007[13]

Single center

Random number table (SPSS)

Unclear

Clear

Yes

No

Unclear

No

Low risk of bias

Mu HY 2009[14]

Single center

Random number table (SPSS)

Unclear

Clear

Yes

No

Unclear

No

Low risk of bias

Liao HY 2009[15]

Single center

Random number table (SPSS)

Unclear

Unclear

Yes

No

Unclear

No

Unclear risk of bias

Zhang T 2009[16]

Single center

Random number table (SPSS)

Unclear

Clear

Yes

No

Unclear

No

Low risk of bias

Liu J 2009[17]

Single center

Random number table (SPSS)

Unclear

Unclear

Yes

No

Unclear

No

Unclear risk of bias

Ma JB 2009[18]

Single center

Random number table (SPSS)

Unclear

Unclear

Yes

Yes

Unclear

No

Unclear risk of bias

Shi GY 2009[19]

Multi-center

Random number table (SAS)

Unclear

Unclear

Yes

No

Unclear

No

Unclear risk of bias

Han BH 2011[20]

Multi-center

Random number table (SPSS)

Insufficient

Clear

Yes

No

Unclear

No

Low risk of bias

Zhao X 2011[21]

Single center

Random number table (SPSS)

Unclear

Clear

Yes

No

Unclear

No

Low risk of bias

Hu HT 2011[22]

Single center

Random number table (SPSS)

Unclear

Unclear

Yes

No

Unclear

No

Unclear risk of bias

Wen F 2011[23]

Single center

Random number table (SPSS)

Unclear

Unclear

Yes

No

Unclear

No

Unclear risk of bias

Zhang H 2011[24]

Multi-center

unclear

Unclear

Unclear

Yes

No

Unclear

No

Unclear risk of bias

Chen Q 2011[25]

Single center

Random number table (SPSS)

Unclear

Unclear

Yes

No

Unclear

No

Unclear risk of bias

  1. ITT, intention-to-treat; SAS, SAS software; SPSS, SPSS software.