Journal of Ophthalmology / 2019 / Article / Tab 2

Research Article

Trabeculectomy and EX-PRESS Implantation in Open-Angle Glaucoma: An Updated Meta-Analysis of Randomized Controlled Trials

Table 2

Subgroup analysis of IOPR% from the baseline to the endpoint comparing trabeculectomy and EX-PRESS.

GroupNo. of studiesMDTest for heterogeneityTest for overall effect
EstimateLowerUpχ2I2 (%)Z

 ≤24 months55.23−3.5013.9610.96640.031.170.24
 >24 months30.23−9.159.601.8200.400.050.96
Sample size (each group)
Publication year
 Before 20143−0.56−7.446.311.4300.490.160.87
 After 201455.72−3.0014.447.91490.091.290.20
Mitomycin-C concentration
 <0.4 mg/ml34.14−5.5113.784.42550.110.840.40
 ≥0.4 mg/ml42.54−9.3814.467.60610.050.420.68

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.