Table 4. Results of the Cox Proportional Hazards Model Analysis for Condition C (Qualified Success).

Variable	RR	95% CI	P valuea
Phacoemulsification (time-dependent variable)	3.32	1.01 to 10.93	0.049
The type of uveitis (granulomatous vs. non-granulomatous)	1.38	0.33 to 5.82	0.664
Age (per year)	0.99	0.96 to 1.02	0.464
Male vs. female	0.84	0.38 to 1.82	0.645
Pre-trab IOP (per mm Hg)	1.01	0.97 to 1.06	0.568
Duration of uveitis therapy (within 1 year vs. after 1 year before trab)	0.97	0.41 to 2.33	0.948
Duration of glaucoma therapy (within 1 year vs. after 1 year before trab)	0.86	0.38 to 1.94	0.719

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.