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 |