Table 3.
Mixed effects cox regression analysis predicting reoperation for glaucoma
| Hazard ratio | 95% confidence interval | p | |
|---|---|---|---|
| Type of primary surgery | |||
| Trabeculectomy | Reference | ||
| Ex-PRESS | 1.72 | 1.31–2.25 | 0.001 |
| Male (vs. female) | 1.23 | 1.01–1.50 | 0.044 |
| Age (years) | 0.99 | 0.98–1.00 | 0.039 |
| Diabetes mellitus | 1.16 | 0.91–1.49 | 0.23 |
| Surgical history | |||
| Cataract | 1.31 | 0.85–2.02 | 0.23 |
| Vitreous and retina | 0.32 | 0.10–1.05 | 0.060 |
| Simultaneous cataract surgery | 0.76 | 0.60–0.97 | 0.026 |
| Annual hospital volume | |||
| Low (<52) | Reference | ||
| Middle (52–115) | 0.85 | 0.61–1.19 | 0.35 |
| High (115–184) | 1.34 | 0.92–1.96 | 0.13 |
| Very high (>184) | 1.32 | 0.79–2.21 | 0.28 |