Table 3. IOP reduction from baseline.
| Studies | AGV | Trab | WMD(Fixed)(95%CI) | ||
|---|---|---|---|---|---|
| No.Eyes | IOPR%:MD(SD) | No.Eyes | IOPR%(SD) | ||
| Wilson (2003) | 59 | 49.38(27.55) | 64 | 49.48(25.11) | -0.10[-9.44,9.24] |
| Im (2004) | 34 | 46.07(30.7) | 24 | 58.27(30.84) | -12.20[-28.19,3.79] |
| Pakrvan (2007) | 15 | 55.97(16.52) | 15 | 52.58(1.06) | 3.39[-6.96,13.74] |
| Lee (2008) | 27 | 46.07(30.27) | 24 | 56.19(29.12) | -10.92[-23.57,1.73] |
| Tran (2009) | 94 | 41.18(27.55) | 94 | 47.73(31.82) | -6.55[-15.14, 2.04] |
| Shen (2011) | 20 | 71.28(24.24) | 20 | 65.48(23.27) | 5.80[-8.93,20.53] |
| Total | 249 | 258 | -3.04[-8.36, 2.28] | ||
| Heterogeity | I2 = 25% | ||||
| Test for overall effect | z = 1.12 | p = 0.26 | |||
IOP: intraocular pressure; IOPR%: percentage intraocular pressure reduction; CI: confidence interval; WMD: weighted mean difference; AGV: Ahmed glaucoma valve group; Trab: trabeculectomy group.