From: Pain level between clear aligners and fixed appliances: a systematic review
Domains | ||||||||
---|---|---|---|---|---|---|---|---|
 | Pre-intervention | Intervention | Post-intervention |  | ||||
Author | Bias due to confounding | Bias in selection of participants for the study | Bias in classifying interventions | Bias due to deviations from intended interventions | Bias due to missing data | Bias to measuring outcomes | Bias in selecting reported results | Overall risk of bias judgment |
Almasoud (2018) | Low | Low | Low | Moderate | Low | Low | Low | Moderate |
Fujiyama et al. (2014) | Moderate | Low | Moderate | Low | Low | Low | Moderate | Moderate |
Mais-Damois et al. (2015) | Moderate | Low | Low | Moderate | Low | Low | Moderate | Moderate |
Miller et al. (2007) | Moderate | High | High | Moderate | Low | Low | Low | High |
Shalish et al. (2007) | Moderate | Moderate | Moderate | Moderate | Low | Low | Low | Moderate |