| Study/Year | Random method | Assign hidden | Blind method | The integrity of result data | Selective reporting of study results | Other bias Source |
| Zarei, Abbasi et al. 2020 [9] | Low Risk | Not clear | Not clear | Low Risk | Low Risk | Not clear |
| Rössler, Verhagen et al. 2019 [10] | Low Risk | Not clear | Not clear | Not clear | Not clear | Not clear |
| Rössler, Junge et al. 2018 [15] | Low Risk | Not clear | Not clear | Not clear | Not clear | Not clear |
| Foss, Thomas et al. 2018 [16] | Not clear | Not clear | Not clear | Low Risk | Low Risk | Not clear |
| Waldén, Atroshi et al. 2012 [11] | Low Risk | Not clear | Not clear | Not clear | Low Risk | Not clear |
| Emery and Meeuwisse 2010 [12] | Not clear | Low Risk | Not clear | Low Risk | Low Risk | Not clear |
| Owoeye, Akinbo et al. 2014 [17] | Low Risk | Not clear | Not clear | Low Risk | Not clear | Not clear |
| Steffen, Myklebust et al. 2008 [18] | Not clear | Not clear | Not clear | Low Risk | Low Risk | Not clear |
| Soligard, Myklebust et al. 2008 [19] | Not clear | Not clear | Not clear | Low Risk | Not clear | Not clear |
| Kiani, Hellquist et al. 2010 [20] | Low Risk | Not clear | Not clear | Low Risk | Low Risk | Not clear |