Table 2.
Results of univariable analysis using the Cox proportional hazards model for Condition A (qualified success)
| Variable | RR | 95% CI | P valuea |
|---|---|---|---|
| Ex-PRESS procedure (vs trab) | 2.99 | 0.07 to 1.04 | 0.027 |
| Age (per year) | 0.97 | −0.066 to − 0.001 | 0.041 |
| Male (vs female) | 0.84 | −1.21 to −1.10 | 0.768 |
| Preoperative IOP (per mm Hg) | 1.08 | 0.017 to 0.13 | 0.011 |
| Rubeosis iridis | 1.47 | −0.61 to 1.53 | 0.464 |
| Pseudophakia | 1.35 | −0.67 to 1.37 | 0.547 |
| Avitreous status | 2.73 | 0.034 to 2.07 | 0.042 |
| History of IVB within 3 days before surgery | 1.44 | −0.63 to 1.51 | 0.487 |
CI confidence interval, IOP intraocular pressure, RR relative risk, trab trabeculectomy, vs versus
aThe P values were determined by means of the Wald test in the Cox proportional hazardsmodel. Significant at P < .05