Table 1

Quality features of 5 studies of RCTs assessed in the meta-analysis
Study Year Design Reporting of randomization Generation of random sequence Completeness of follow-up Description of withdrawals Quality score
Bert et al. [19] 2001 NS Y Table of random numbers Y Y 4
Cook et al. [22] 2009 DB Y NA Y Y 4
Forlani et al. [20] 2002 NS Y computer-generated random code Y Y 4
Geertman et al. [21] 2004 DB Y NA Y Y 4
Solomon et al. [23] 2000 NS Y NA Y Y 3

DB: double-blind; NS: blinding characteristics of study not specified; NA: unable to assess; RCTs: randomized controlled trials; Y: yes.

Wu et al.

Wu et al. BMC Cardiovascular Disorders 2013 13:5   doi:10.1186/1471-2261-13-5

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