Skip to main content

Table 4 Risk of bias for non-randomized studies according to the MINORS tool (20)

From: The effectiveness of the early orthodontic correction of functional unilateral posterior crossbite in the mixed dentition period: a systematic review and meta-analysis

References 1. A clearly stated aim 2. Inclusion of consecutive patients 3. Prospective collection of data 4. Endpoints appropriate to the aim of the study 5. Unbiased assessment of the study endpoint 6. Follow-up period appropriate to the aim of the study 7. Loss to follow up less than 5% 8. Prospective calculation of the study size 9. An adequate control group 10. Contemporary groups 11. Baseline equivalence of groups 12. Adequate statistical analyses Total
Boysen et al. [39] 2 1 2 2 0 2 0 0 2 2 2 2 17/24
Brin et al. [40] 2 2 2 2 0 2 1 0 1 1 2 2 17/24
Bjerklin et al. [41] 2 2 1 2 0 2 2 0 2 2 2 2 19/24