Table 3.
Risk for bias in included studies.
| Study* (Y) | Random Sequence Generation (Selection Bias) | Allocation Concealment (Selection Bias) | Masked Participants and Personnel (Performance Bias) | Masked Outcome Assessment (Detection Bias) | Incomplete Outcome Data (Attrition Bias) | Selective Reporting (Reporting Bias) |
|---|---|---|---|---|---|---|
|
| ||||||
| Al Fayez16 (2015) | Unclear | Low | High | Unclear | Low | Unclear |
| Bikbova18 (2016) | Unclear | Low | High | Unclear | Low | Unclear |
| Lombardo19 (2017) | Unclear | Low | High | Unclear | Low | Unclear |
| Rossi14 (2015) | Unclear | Low | High | Unclear | Low | Unclear |
| Rush17 (2017) | Low | Low | High | Unclear | Low | Low |
| Soeters15 (2015) | Low | Low | High | Unclear | Low | Low |
| Stojanovic13 (2014) | Unclear | Low | High | Unclear | Low | Unclear |
*
First author