Table 3.

Methodological Index of Non-randomized Studies checklist for quantitative studies

Authors	MINORS questions
	Q1a	Q2b	Q3c	Q4d	Q5e	Q6f	Q7g	Q8h	Q9i	Q10j	Q11k	Q12l	Total
Dengsø et al. (2021) [6]	2	2	0	2	2	2	0	0	1	2	0	1	14
Janda et al. (2017) [32]	2	1	2	2	0	0	0	0	0	0	0	0	8
Sherman et al (2015) [33]	2	0	2	2	0	0	0	0	0	0	0	0	7
Engebreston et al. (2015) [5]	2	1	0	1	0	0	0	0	0	0	0	0	4

MINORS Methodological index of nonrandomized studies, NA not applicable

^aA clearly stated aim

^bInclusion of consecutive patients

^cData was collected according to established protocol

^dEndpoint appropriate to the aim of the study

^eUnbiased assessment of the study endpoint

^fFollow-up period appropriate of the study

^gLoss to follow-up less than 5%

^hProspective calculation of the study size

ⁱAn adequate control group was used?

^jStudied and control groups were managed at the same time

^kBaseline equivalence of studied and control groups

^lAdequate statistical analyses were used