Table 6. Results of the Cox Proportional Hazards Model Analysis for Condition A (Qualified Success).

Variable	RR	95% CI	P valuea
Phacoemulsification (time-dependent variable)	1.21	0.27 to 5.36	0.807
The type of uveitis (granulomatous vs. non-granulomatous)	2.70	0.34 to 21.22	0.345
Age (per year)	0.99	0.96 to 1.03	0.690
Male vs. female	1.04	0.34 to 3.23	0.941
Pre-trab IOP (per mm Hg)	0.97	0.91 to 1.03	0.329
Duration of uveitis therapy (within 1 year vs. after 1 year before trab)	0.71	0.20 to 2.50	0.591
Duration of glaucoma therapy (within 1 year vs. after 1 year before trab)	0.97	0.29 to 3.23	0.960

CI, confidence interval; IOP, intraocular pressure; RR, relative risk; trab, trabeculectomy; vs., versus.

^a P values were determined by means of the Wald test in the Cox proportional hazards model.

Significant at P < 0.05.