Table 4.

Methodological index for non-randomized studies (MINORS).

	Clearly Stated Aim	Inclusion of Consecutive Patients	Prospective Collection of Data	Endpoints Appropriate to the Aim of the Study	Unbiased Assessment of the Study Endpoint	Follow-Up Period Appropriate to the Aim of the Study	Loss to Follow-Up Less than 5%	Prospective Calculation of the Study Size	* An Adequate Control Group	* Contemporary Groups	* Baseline Equivalence of Groups	* Adequate Statistical Analyses	Total
Thakur et al., 2013	2	1	2	2	2	2	2	0	2	2	2	2	21
Zavattini et al., 2020	2	2	2	2	2	2	0	2	2	2	2	2	22

The items are scored 0 (not reported), 1 (reported but inadequate) or 2 (reported and adequate). The global ideal score is 16 for non-comparative studies and 24 for comparative studies. * For study with control group.