Table 8.
Median number of IOP-lowering medications with interquartile ranges at each review
| Surgery | Initial r/v (N = 66) |
1 month (N = 57) |
6 months (N = 58) |
12 months (N = 50) |
18 months (N = 45) |
24 months (N = 45) |
|---|---|---|---|---|---|---|
|
BVT (N = 18) |
5.0 (IR 1) | 3.0 (IR 4) | 3.0 (IR 4) | 2.0 (IR 3) | 1.5 (IR 2) | 1.0 (IR 3) |
|
TSCPC (N = 36) |
4.0 (IR 1) | 4.0 (IR 2) | 3.0 (IR 3) | 3.0 (IR 3) | 1.0 (IR 3) | 1.0 (IR 3) |
|
Delayed or no surgery (N = 8) |
3.0 (IR 2) | 1.5 (IR 3) | 1.0 (IR 2) | 0.0 (IR 4) | 0.0 (IR 2) | 0.0 (IR 2) |
|
PPV (N = 3) |
3.0 (IR nil) | 3.0 (IR nil) | 1.0 (IR nil) | 2.5 (IR nil) | 2.0 (IR nil) | 2.0 (IR nil) |
|
Trab + MMC (N = 2) |
4.5 (IR nil) | 0.0 (IR nil) | Nil | Nil | Nil | Nil |
| Statistically significant difference Mann–Whitney test (for two variables) and Kruskal–Wallis for all variables |
1. BVT vs Delayed or no surgery p = 0.011, Z = −2.6 2. BVT vs TSCPC vs Delayed or no surgery vs PPV vs Trab + MMC (p = 0.018) |
1. BVT vs TSCPC vs Delayed or no surgery vs PPV vs Trab + MMC (p = 0.079) | 1. BVT vs TSCPC vs Delayed or no surgery vs PPV vs Trab + MMC (p = 0.219) | 1. BVT vs TSCPC vs Delayed or no surgery vs PPV vs Trab + MMC (p = 0.398) | 1. BVT vs TSCPC vs Delayed or no surgery vs PPV vs Trab + MMC (p = 0.328) | 1. BVT vs TSCPC vs Delayed or no surgery vs PPV vs Trab + MMC (p = 0.521) |
BVT Baerveldt tube, TSCPC trans-scleral cyclophotocoagulation, PPV pars plana vitrectomy, Trab + MMC trabeculectomy and mitomycin C