Table 3.

Multivariate Regression: Predictors of Collateral Vessels on the Disk and Within the Retina at Baseline

	Disk				Retina
	BRVO (Including HRVO)		CRVO		BRVO (Including HRVO)		CRVO
Baseline Characteristic	Odds Ratio	P*	Odds Ratio	P*	Odds Ratio	P*	Odds Ratio	P*
Treatment group (1 mg)	1.52	0.479	0.68	0.248	1.03	0.458	0.83	0.698
Treatment group (4 mg)	1.33	0.838	1.01	0.538	0.62	0.179	0.45	0.253
Age	1.02	0.284	1.00	0.979	0.95	0.002	1.01	0.830
Female	0.87	0.710	1.07	0.853	0.54	0.083	0.37	0.117
Diabetes	1.05	0.915	0.57	0.179	0.64	0.335	0.71	0.626
Coronary heart disease	0.72	0.499	0.98	0.959	0.38	0.065	0.73	0.681
Systemic hypertension	1.58	0.305	1.15	0.699	2.68	0.020	2.13	0.273
Duration of macular edema	1.06	0.216	1.10	0.054	1.11	0.010	0.94	0.488
Baseline capillary nonperfusion	1.04	0.124	0.98	0.817	1.02	0.426	1.10	0.389
Baseline visual acuity letter score	0.97	0.015	0.98	0.188	0.98	0.257	0.98	0.310
Baseline IOP	1.09	0.141	1.03	0.584	1.02	0.761	1.00	0.998
Baseline lens status (pseudophakic)	1.53	0.365	0.84	0.728	1.19	0.741	0.61	0.600
Area of retinal hemorrhage	1.24	0.012	0.89	0.077	0.76	0.006	0.75	0.046

^*P value is from a multivariate logistic regression modeling the relationship between all baseline characteristics jointly and collateral vessel status on the disk at baseline or within the retina at baseline.

IOP, intraocular pressure.