Table 3. Results of ROBIS quality evaluation.
| First author and year | Phase 2 | Phase 3 | |||||
|---|---|---|---|---|---|---|---|
| Concerns regarding specification of study eligibility criteria |
Concerns regarding methods used to identify and/or select studies |
Concerns regarding methods used to collect data and appraise studies |
Concerns regarding methods used to synthesize results |
Judging risk of bias | |||
| Kalembo, 2013 | Low Concern | Low Concern | Unclear Concern | Low Concern | Unclear Risk of Bias | ||
| Kim, 2008 | Low Concern | Low Concern | Low Concern | Low Concern | Low Risk of Bias | ||
| Kirby, 2006 | Low Concern | Low Concern | Low Concern | Unclear Concern | Unclear Risk of Bias | ||
| Maticka-Tyndale, 2010 | Low Concern | Low Concern | Low Concern | Low Concern | Low Risk of Bias | ||
| Medley, 2009 | Low Concern | Low Concern | Low Concern | Low Concern | Low Risk of Bias | ||
| Siddiqui, 2020 | Low Concern | Low concern | Unclear Concern | Unclear concern | Unclear Risk of Bias | ||
| Sun, 2018 | Low Concern | Low concern | Low Concern | Low concern | Low Risk of Bias | ||
| Tolli, 2012 | Low Concern | Low Concern | Low Concern | Low Concern | Low Risk of Bias | ||