Effectiveness of surgical skin preparation solutions in orthopaedic surgery: A systematic review of the current comparative literature

Table 6 Methodological index for non-randomized studies criteria of comparative studies

MINORS criteria quality assessment
Ref.	Beber et al[24], 2022	Becerro de Bengoa Vallejo et al[33], 2009	Blonna et al[42], 2018	Dörfel et al[44], 2021	Ghobrial et al[53], 2018	Madariaga et al[54], 2024	Mizels et al[46], 2024	Rouquette et al[29], 2020	Wade et al[51], 2021	Yoshii et al[56], 2018
Clearly stated aim	2	2	2	2	2	2	2	2	2	2
Inclusion of consecutive patients	2	2	2	2	2	2	2	2	2	2
Prospective collection of data	2	2	2	2	2	2	2	2	2	2
Appropriate endpoints	2	1	2	2	2	2	2	2	2	2
Unbiased assessment endpoints	1	1	1	1	2	2	2	1	2	2
Appropriate follow-up	2	2	2	2	2	2	2	2	2	2
Loss to follow-up	2	2	2	2	2	2	2	2	1	2
Prospective calculation of study size	2	0	2	2	2	2	0	0	0	0
Adequate control group	2	1	2	1	2	2	2	2	1	2
Contemporary groups	2	1	1	1	2	2	2	2	1	2
Baseline equivalence of groups	2	1	1	1	2	2	2	2	1	2
Adequate statistical analysis	2	2	2	2	2	2	2	2	2	2
Cumulative MINORS score	23	17	21	20	24	24	22	21	18	22

MINORS: Methodological index for non-randomized studies; 0: Not reported; 1: Reported but inadequate; 2: Reported and adequate.