Table 2. Multivariable Cox Proportional Hazards Model for Sustained Reduction of at Least 1 Topical Antihypertensive Agent Without Subsequent Laser Trabeculoplasty or Glaucoma Surgery, Among iStent/CEIOL Patients Receiving at Least 1 Agent at Baseline.
| Characteristic | Hazard Ratio (95% CI) | P Value |
|---|---|---|
| Age at first surgery (per year increase) | 1.00 (0.99-1.01) | .99 |
| Female (reference: male) | 1.04 (0.86-1.25) | .69 |
| Glaucoma diagnosis (reference: POAG) | ||
| Narrow angle | 0.95 (0.73-1.24) | .72 |
| Secondary glaucomas | 0.92 (0.65-1.31) | .65 |
| Calendar year of surgery, per year increase | 1.04 (0.94-1.16) | .43 |
| Bilateral iStent/CEIOL (reference: unilateral iStent/CEIOL) | 1.97 (1.64-2.37) | <.001 |
| Baseline number of topical antihypertensive agents (reference: 1 agent) | ||
| 2 Agents | 1.23 (0.98-1.54) | .07 |
| ≥3 Agents | 1.71 (1.37-2.13) | <.001 |
Abbreviations: CEIOL, cataract extraction with intraocular lens implantation; POAG, primary open-angle glaucoma.