Table 6.
Median IOP with interquartile ranges at each follow-up interval
| Surgery | Initial review IOP (mmHg) (N = 67) |
1-month IOP (mmHg) (N = 57) | 6-month IOP (mmHg) (N = 59) |
12-month IOP (mmHg) (N = 51) |
18-month IOP (mmHg) (N = 44) |
24-month IOP (mmHg) (N = 43) |
|---|---|---|---|---|---|---|
|
BVT (N = 18) |
38.5 (IR 25) | 14.0 (IR 17) | 14.0 (IR 10) | 14.0 (IR 7) | 11.0 (IR 5) | 13.0 (IR 17) |
|
TSCPC (N = 36) |
40.5 (IR 21) | 22 (IR 28) | 17.0 (IR 19) | 18.5 (IR 11) | 17.0 (IR 13) | 19.0 (IR 11) |
|
Delayed or no surgery (N = 8) |
31.0 (IR 13) | 17.5 (IR 18) | 16.0 (IR 26) | 23.0 (IR 32) | 22.0 (IR 15) | 14.5 (IR 18) |
|
PPV (N = 3) |
29.0 (IR nil) | 15.0 (IR nil) | 11.0 (IR nil) | 32.0 (IR nil) | 40.0 (IR nil) | 37.0 (IR nil) |
|
Trab + MMC (N = 2) |
36.0 (IR nil) | 8.0 (IR nil) | 8.0 (IR 0) | 14.5 (IR nil) | Nil | Nil |
| Statistically significant difference Mann–Whitney test (for two variables) and Kruskal–Wallis for all variables | 1. BVT vs TSCPC vs Delayed or no surgery vs PPV vs Trab + MMC (p = 0.124) |
1. BVT vs TSCPC (p < 0.028, Z = −2.2) 2. BVT vs TSCPC vs Delayed or no surgery vs PPV vs Trab + MMC (p = 0.069) |
1. BVT vs TSCPC vs Delayed or no surgery vs PPV vs Trab + MMC (p = 0.127) |
1. BVT vs TSCPC (p < 0.022, Z = −2.3) 2. BVT vs TSCPC vs Delayed or no surgery vs PPV vs Trab + MMC (p = 0.113) |
1. BVT vs TSCPC (p < 0.049, Z = −2.0) 2. BVT vs TSCPC vs Delayed or no surgery vs PPV vs Trab + MMC (p = 0.133) |
2. BVT vs TSCPC vs Delayed or no surgery vs PPV vs Trab + MMC (p = 0.798) |
BVT Baerveldt tube, TSCPC trans-scleral cyclophotocoagulation, PPV pars plana vitrectomy, Trab + MMC trabeculectomy and mitomycin C