Table 2 Pooled estimates for IOPR from baseline for Ahmed versus Baerveldt
From: The Ahmed shunt versus the Baerveldt shunt for refractory glaucoma: a meta-analysis
No. of studies | WMD(random)(95 % CI) | Test for heterogeneity | Test for overall effect | |
|---|---|---|---|---|
6 months | ||||
All trials | 5 | 1.58 (−2.99, 6.15) | Q =83.02, P <0.001 | Z =0.68, P =0.499 |
Retro | 3 | 2.52 (−4.81, 9.84) | Q =31.53, P <0.001 | Z =0.67, P =0.500 |
RCT | 2 | 0.06 (−1.34, 1.45) | Q =0.83, P =0.362 | Z =0.08, P =0.937 |
12 months | ||||
All trials | 6 | −1.01 (−3.40, 1.98) | Q =35.80, P <0.001 | Z =0.66, P =0.509 |
Retro | 4 | 0.29 (−3.12,3.70) | Q =12.12, P =0.007 | Z =0.17, P =0.869 |
RCT | 2 | −3.16 (−4.86,−1.45) | Q =0.16, P =0.687 | Z =3.63, P <0.001 |
24 months | ||||
All trials | 3 | −0.54 (−4.89, 3.82) | Q = 21.78, P <0.001 | Z =0.24, P =0.809 |
Retro | 2 | 0.28 (−5.68, 6.24) | Q = 10.11, P =0.001 | Z = 0.09, P =0.926 |
RCT | 1 | −2.27 (−4.68, 0.14) | - | Z =1.85, P =0.065 |
36 months | ||||
All trials | 2 | −0.47 (−3.29, 2.35) | Q = 4.44, P =0.035 | Z = 0.32, P =0.746 |
Retro | 1 | 0.80 (−0.46, 2.06) | - | Z = 1.24, P =0.215 |
RCT | 1 | −2.10 (−4.48, 0.28) | - | Z = 1.73, P =0.084 |