Table 1.

Demographic and Clinical Characteristics of Participants Stratified by Presence of Retinal Vein Occlusion

	RVO* (n = 20)	Non-RVO (n = 20)	Difference (95% Confidence Interval)	P-value‡
Age, mean yrs (± SD)	68.9 (8.4)	67.7 (7.6)	1.2 (−4.0, 6.4)	0.6
Male, n (%)	5 (25.0)	5 (25.0)	n/a	1.0
Current Smoker, n (%)	6 (30.0)	1 (5.0)	n/a	0.091**
Caucasian, n (%)	17 (85.0)	17 (85.0)	n/a	1.0**
Diabetes Mellitus, n (%)	3 (15.0)	0 (0)	n/a	0.23**
Glaucoma, n (%)	5 (25.0)	0 (0)	n/a	0.047**
Baseline Clinic SBP, mean mmHg (± SD)	151.4 (21.1)	129.0 (17.4)	22.4 (10.0, 34.8)	0.0008
Baseline Clinic DBP, mean mmHg (± SD)	85.4(10.6)	78.3(12.6)	7.2 (−0.2, 14.6)	0.058
Clinic Pulse Pressure, mean mmHg (± SD)	65.9 (17.2)	50.7 (11.0)	15.2 (−6.0, 24.5)	0.002
Hypertension, n (%)†	13 (65.0)	6 (30.0)	n/a	0.027
Antihypertensive treatment	12 (60.0)	0 (0)	n/a	<0.001**

^*Total, n = 40; RVO, n = 20; Control, n = 20. BP, blood pressure; SBP, systolic blood pressure; DBP, diastolic blood pressure; Pulse Pressure, as defined as systolic pressure minus diastolic pressure

^†Based on clinic SBP ≥ 140 mmHg or DBP ≥ 90 mmHg

^‡Based on two-sample Student’s T-test for continuous variables, Pearson’s Chi-square test for categorical variables

^**Based on Fisher’s Exact test since at least one cell has expected count less than five