Methodological Items for non-randomized studies (MINORS) score distribution.

Table 2: Methodological Items for non-randomized studies (MINORS) score distribution.

	Average	SD	Range
(1) A clearly stated aim	1.818182	0.57496	0-2
(2) Inclusion of consecutive patients	0.909091	0.899954	0-2
(3) Prospective collection of data	1.272727	0.962091	0-2
(4) Endpoints appropriate to the aim of the study	1.909091	0.28748	1-2
(5) Unbiased assessment of the study end point	1.090909	0.28748	1-2
(6) Follow up period appropriate to the aim of the study	1.272727	0.862439	0-2
(7) Loss to follow-up less than 5%	1.545455	0.78203	0-2
(8) Prospective calculation of the study size	0.545455	0.78203	0-2
Total for non-comparative (16)	10.363	3.96	3-15