pISSN 2234-7518
eISSN 2005-372X

Table. 7.

Assessment of the risk of bias within studies

Study Study design Sample size Selection description Valid measurement method Method error analysis Blinding Statistics Confounding factors Total score Judged quality standard
Calil et al.13 (2021) 0 1 1 1 1 0 1 0 5 Low
Cantarella et al.16 (2017) 0 1 1 1 1 0 1 0 5 Low
Clement et al.20 (2017) 1 0 1 1 0 0 1 0 4 Low
Elkenawy et al.25 (2020) 0 1 1 1 1 0 1 0 5 Low
Jesus et al.22 (2021) 0 0 1 1 1 0 1 1 5 Low
Li et al.26 (2020) 0 1 1 1 1 0 1 0 5 Low
Li et al.11 (2020) 0 1 1 1 1 0 1 0 5 Low
Lim et al.15 (2017) 0 0 1 1 1 0 1 0 4 Low
Moon et al.27 (2020) 0 0 1 1 1 0 1 0 4 Low
Ngan et al.18 (2018) 0 0 1 1 1 0 1 0 4 Low
Nguyen et al.28 (2021) 0 0 1 1 1 0 1 0 4 Low
de Oliveira et al.24 (2021) 0 0 1 1 1 0 1 1 5 Low
Park et al.29 (2017) 0 0 1 1 1 0 1 0 4 Low
Tang et al.7 (2021) 0 0 1 1 1 0 1 0 4 Low
Overall estimate 4.5 Low

Study design: Randomized controlled trial = 3, Prospective = 1, Retrospective = 0, Case series/Case report = 0; Sample size: Adequate (number of samples at least 25 patients) = 1, Inadequate = 0; Selection description: Adequate = 1, Need recalculation = 0; Measurement method: Valid = 1, Invalid = 0; Method error analysis: Yes = 1, No = 0; Blinding in measurement: Yes = 1, No = 0; Statistics: Adequate = 1, Inadequate = 0; Confounding factor stated: Yes = 1, No = 0.

Criteria was modified from the method by Bondemark and Feldmann (Angle Orthod 2006;76:493-501).23

Korean J Orthod 2022;52:182~200 https://doi.org/10.4041/kjod21.256
© Korean J Orthod
Copyright © The Korean Association of Orthodontists. / Powered by INFOrang Co., Ltd