Table 2.

MINORS Scores of Included Studies^a

	MINORS Score Itemb
Lead Author (Year)	1	2	3	4	5	6	7	8	9	10	11	12	Overall
Enea6 (2018)	2	2	1	2	0	2	0	2	2	2	1	2	18
Fabricant7 (2014)	2	2	1	2	2	1	2	0	—	—	—	—	12
Marteau14 (2011)	2	2	1	2	0	2	1	0	—	—	—	—	10
Mayer15 (2012)	2	2	1	2	0	2	1	0	—	—	—	—	10
Otsuki17 (2013)	2	2	1	2	0	2	2	0	—	—	—	—	11
Otsuki16 (2017)	2	2	1	2	0	2	2	2	2	2	2	2	21
Otsuki18 (2018)	2	2	1	2	0	2	2	0	—	—	—	—	11
Roessler21 (2019)	2	2	1	2	2	2	2	0	2	2	2	2	21
Rood22 (2020)	2	2	1	2	0	1	2	0	—	—	—	—	10
Simmons23 (1992)	2	2	1	2	0	2	2	0	—	—	—	—	11
Yang33 (2019)	2	2	2	2	2	2	2	1	—	—	—	—	15

^aMINORS, Methodological Index for Non-Randomized Studies. The dashes indicate that the category of evaluation was not relevant to the article assessed.

^bItem descriptions: 1, stated aim of the study; 2, inclusion of consecutive patients; 3, prospective collection of data; 4, endpoint appropriate to the study aim; 5, unbiased evaluation of endpoints; 6, follow-up period appropriate; 7, loss to follow-up not exceeding 5%; 8, a control group having the gold standard intervention; 9, contemporary groups; 10, baseline equivalence of groups; 11, prospective calculation of the sample size; and 12, statistical analyses adapted to the study design.