Table 4.
Multivariable analysis to identify prognostic risk factors for failure using Cox proportional hazards regression models.
| Criterion | ||||
|---|---|---|---|---|
| A | B | |||
| RR (95% CI) | p-Value | RR (95% CI) | p-Value | |
| Sex (Male/Female) | 0.93 (0.52–1.65) | 0.81 | 0.86 (0.53–1.39) | 0.55 |
| Age per year | 0.97 (0.93–1.01) | 0.13 | 0.97 (0.94–1.00) | 0.08 |
| Axial length per mm | 1.04 (0.89–1.19) | 0.63 | 1.04 (0.92–1.16) | 0.54 |
| Visual field MD per dB | 0.99 (0.96–1.03) | 0.7 | 0.98 (0.96–1.01) | 0.23 |
| Glaucoma type (POAG/ExG) | 0.74 (0.39–1.48) | 0.38 | 1.32 (0.76–2.37) | 0.33 |
| Preoperative IOP per mmHg | 0.89 (0.83–0.95) | <0.01 | 1.02 (0.98–1.06) | 0.31 |
| Preoperative glaucoma medication per each | 1.04 (0.85–1.27) | 0.72 | 1.05 (0.89–1.24) | 0.57 |
| IOP spikes | 1.41 (0.64–2.87) | 0.38 | 1.46 (0.73–2.71) | 0.27 |
ExG, exfoliation glaucoma; IOP, intraocular pressure; MD, mean defect; POAG, primary open-angle glaucoma; RR, relative risk.