Table 2.
Comparison of demographic data and risk factors of surgical failure between groups
| Interval ≤ 1 month (n = 37) |
Interval > 1 month (n = 46) |
p-Value | |
|---|---|---|---|
| Initial IOP (mmHg) | 34.87 ± 5.29 | 32.24 ± 9.21 | 0.108a |
| Corneal diameter (mm) | 13.18 ± 1.33 | 13.38 ± 0.78 | 0.412a |
| Follow-up period (month) | 30 (15.25–42) | 34 (16.75–75.5) | 0.324b |
| Gender (female:male) | 0.440c | ||
| Female | 13 (35.1%) | 20 (39.8%) | |
| Male | 24 (64.9%) | 26(60.2%) | |
| Laterality | 0.993c | ||
| Bilateral | 33 (89.2%) | 41 (89.1%) | |
| Unilateral | 4 (10.8%) | 5 (10.9%) | |
| Haab’s striae | 0.418c | ||
| Yes | 21 (56.8%) | 22 (47.8%) | |
| No | 16 (43.2%) | 24(52.2%) | |
| Severity of corneal opacity | 0.066c | ||
| Good | 2 (5.4%) | 11 (23.9%) | |
| Fair | 30 (81.1%) | 29 (63.0%) | |
| Poor | 5 (13.5%) | 6 (13.0%) | |
| Severity score | 0.397c | ||
| Mild | 0 (0.00%) | 0 (0.00%) | |
| Moderate | 20 (54.1%) | 32 (69.6%) | |
| Severe | 17(45.9%) | 14(30.4%) | |
| SPI | 2.80(1.78–3.33) | 0.93(0.48–2.33) | 0.000b |
aStudent’s t-test; bWilcoxon rank sum test; cChi-square test; interval: interval between onset to surgery; IOP intraocular pressure, SPI speed of progression index