Table 8.

Inter-reviewer K-coefficient for agreement of MINORS criteria for quality assessment of included studies

Item number	Methodological item for nonrandomized studies	K-coefficient
1	A clearly stated aim	1
2	Inclusion of consecutive patients	1
3	Prospective collection of data	1
4	Endpoints appropriate to the aim of the study	1
5	Unbiased assessment of the study end point	1
6	Follow-up period appropriate to the aim of the study	1
7	Loss to follow-up less than 5%	0.76
8	Prospective calculation of the study size	0.75
9	An adequate control group	0.75
10	Contemporary groups	1
11	Baseline evidence of groups	1
12	Adequate statistical analysis	1

MINORS Methodological Index for Non-Randomized Studies, K-Coefficient Kappa coefficient for interrater agreement