. 2015 Feb 26;10(2):e0118142. doi: 10.1371/journal.pone.0118142

Table 6. Reduction of Glaucoma Medications from baseline.

No.of studies	WMD(Random)(95%CI)	Heterogeity		overall effect
No.of studies	WMD(Random)(95%CI)	I²	P	Z	P
Total studies	0.24[-0.27,0.76]	85%	0.0001	0.94	0.35
Sensitivity analysis	0.06[-0.28,0.39]	46%	0.14	0.33	0.74
RCT	0.09[-0.17,0.35]	21%	0.26	0.67	0.50
Non-RCT	0.33[-0.61,1.27]	83%	0.003	0.69	0.49
Sensitivity analysis	0.10[-0.54,0.74]	76%	0.05	0.16	0.87

RCT: prospective randomized controlled trial; Non-RCT: retrospective non—randomized controlled clinical trials; RR: Relative Risk CI: confidence interval; WMD: weighted mean difference.