Table 2 Quality assessments for the included randomized controlled studies using the Cochrane Collaboration’s tool
Study | Sequence generation | Allocation concealment | Blinding of outcome assessment | Incomplete outcome data | Selective reporting | Other bias |
|---|---|---|---|---|---|---|
Harter (2019) [18] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |
Dell’ Anna (2012) [24] | Low risk | High risk | Unclear risk | Low risk | Low risk | Low risk |
Maggioni (2006) [23] | Low risk | Unclear risk | Low risk | Low risk | Unclear risk | Low risk |
Panici (2005) [22] | Low risk | Low risk | Unclear risk | Low risk | Low risk | Low risk |