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Table 2 Assessment of the methodological quality for individual trials

From: Potential effectiveness of traditional Chinese medicine for cardiac syndrome X (CSX): a systematic review and meta-analysis

Studies year* Randomization Allocation concealment Blinding Loss to follow-up ITT analysis
Sun 2007 [24] yes unclear unclear no unclear
Ge 2011 [25] yes unclear unclear no unclear
Peng 2011 [26] yes unclear yes no unclear
Niu 2008 [27] yes unclear yes no unclear
Gao 2005 [28] yes unclear unclear no unclear
Xu 2011 [29] yes unclear unclear no unclear
Bi 2003 [30] yes unclear unclear no unclear
Wang 2009 [31] yes unclear unclear no unclear
Xu LJ 2002 [32] yes unclear unclear no unclear
Liu 2008 [33] yes unclear unclear no unclear
Zhang 2002 [34] yes unclear unclear no unclear
Lu 2007 [35] yes unclear unclear no unclear
Zhu 2003 [36] yes unclear unclear no unclear
Liang 2005 [37] yes unclear unclear no unclear
Yuan 2008[38] yes unclear unclear no unclear
Wang GF 2008 [39] yes unclear unclear no unclear
Zhang SL 2008 [40] yes unclear unclear no unclear
Zhang XY 2008 [41] yes unclear unclear no unclear
Wu 2010 [42] yes unclear unclear no unclear
Li 2009 [43] yes unclear unclear no unclear
Feng 2005 [44] yes unclear unclear no unclear