Trabeculectomy with versus without releasable sutures for glaucoma: a meta-analysis of randomized controlled trials

Table 3 Subgroup analyses of percentage reduction in IOP

Subgroup	Studies (n)	WMD (Fixed) (95% CI)	Heterogeneity			Overall effect
Subgroup	Studies (n)	WMD (Fixed) (95% CI)	Q	P	I² (%)	Z	P
All trials	5	-4.56 (-9.24, 0.12)	1.19	0.879	0.00%	1.91	0.056
Use of antimetabolite
Yes	4	-4.21 (-9.02, 0.61)	0.82	0.844	0.00%	1.71	0.087
No	1	-4.93 (-9.61, -0.26)	0.00	-	-	1.70	0.090

Abbreviations: IOP intraocular pressure, WMD weighted mean difference, CI confidence interval.

ISSN: 1471-2415