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Table 6 Risk of bias of the included studies, according to the ROBINS-I tool

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