Prospective study of vitrectomy for epiretinal membranes in patients with good best-corrected visual acuity

BMC Ophthalmology

Table 4 Factors affecting postoperative horizontal metamorphopsia score (linear mixed-effects model, multivariate analysis)

Category model		Parameter 95% CI
Category model		Est.	Lower limit	Upper limit	SD	P-value
Segment		0.0000	− 0.1770	0.1770	0.0888	1.0000
Time point	1	0.0594	−0.1734	0.2923	0.1181	0.6153
Time point	2	0.0317	−0.1513	0.2147	0.0928	0.7332
Time point	3	0.0885	−0.0945	0.2715	0.0928	003416
Time point	0	0.0000
Pre-op MH		1.0000	0.8341	1.1659	0.0842	< 0.0001
Pre-op MH and Time point interaction	1	−0.4152	−0.6406	−0.1897	0.1144	0.0004
Pre-op MH and Time point interaction	2	−0.3974	−0.5709	− 0.2239	0.0880	< 0.0001
Pre-op MH and Time point interaction	3	−0.5431	−0.7167	− 0.3696	0.0880	< 0.0001
Pre-op MH and Time point interaction	0	0.0000

Time point 0: preoperative, 1: post-1 M, 2: post-3 M, 3: post-6 M MH, horizontal metamorphopsia score; SD, standard deviation; Est., estimated value

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