Comparison of the Effectiveness of Pars Plana Vitrectomy with and without Internal Limiting Membrane Peeling for Idiopathic Retinal Membrane Removal: A Meta-Analysis

Table 1

Quality assessment using the Methodological Index for Nonrandomized Studies.

Study	1	2	3	4	5	6	7	8	9	10	11	12	MINORS score
Kim et al., 2005 [19]	2	2	2	2	2	2	2	2	1	2	0	2	21
Kwok et al., 2005 [25]	2	1	2	2	2	2	2	2	0	2	2	2	21
Liu and Mori., 2005 [24]	2	2	2	2	2	2	2	2	1	2	0	2	21
Lee and Kim, 2010 [18]	2	2	2	2	2	2	2	2	1	2	0	2	21
Pournaras et al., 2011 [17]	2	2	2	2	2	2	2	2	0	2	0	2	20
Chang et al., 2013 [23]	2	2	2	2	2	1	2	2	1	0	2	2	20
Oh et al., 2013 [16]	2	2	2	2	2	2	2	2	0	2	0	2	20
Ahn et al., 2014 [22]	2	2	2	2	2	2	2	2	1	2	0	2	21

() A stated aim of the study; () inclusion of consecutive patients; () prospective collection of data; () endpoints appropriate for the study aim; () unbiased evaluation of endpoints; () follow-up period appropriate to the major endpoint; () loss to follow-up not exceeding 5%; () a control group having the gold standard intervention; () contemporary groups; () baseline equivalence of groups; () prospective calculation of the sample size; () statistical analyses adapted to the study design.
0: not reported; 1: reported but inadequate; 2: reported and adequate.