Table 4.

Multivariate Regression: Development of Collateral Vessels on the Disk and Within the Retina Over 36 Months

	Disk				Retina
	BRVO (Including HRVO)		CRVO		BRVO (Including HRVO)		CRVO
Baseline Characteristic	Hazard Ratio	P*	Hazard Ratio	P*	Hazard Ratio	P*	Hazard Ratio	P*
Treatment group (1 mg)	1.35	0.419	0.80	0.472	0.86	0.457	0.77	0.322
Treatment group (4 mg)	1.33	0.443	1.16	0.627	1.10	0.612	0.95	0.850
Age	1.02	0.325	0.98	0.117	0.98	0.014	0.98	0.035
Female	0.75	0.346	1.16	0.574	0.96	0.668	0.79	0.300
Diabetes	0.84	0.669	0.90	0.727	0.48	0.002	0.73	0.259
Coronary heart disease	1.04	0.926	0.83	0.578	0.83	0.369	1.07	0.829
Systemic hypertension	0.58	0.076	1.40	0.243	1.10	0.584	1.30	0.299
Duration of macular edema	0.91	0.068	0.89	0.014	0.97	0.145	0.90	0.010
Baseline capillary nonperfusion	1.01	0.659	1.07	0.267	1.04	<0.001	1.20	0.001
Baseline visual acuity letter score	0.96	<0.001	0.99	0.159	1.00	0.596	0.99	0.103
Baseline IOP	0.95	0.252	1.01	0.798	0.98	0.344	1.00	0.981
Baseline lens status (pseudophakic)	0.89	0.784	1.21	0.599	1.57	0.047	0.97	0.932
Area of retinal hemorrhage	1.19	0.010	1.04	0.269	0.93	0.070	1.05	0.172

^*P is from a multivariate Cox regression which estimates the increase in hazard of the presence of collateral vessels on the disk or within the retina associated with the baseline predictor, considered jointly with the other predictors over 36 months.

IOP, intraocular pressure.