. Author manuscript; available in PMC: 2010 Nov 24.

Published in final edited form as: Vasc Med. 2009 Nov;14(4):339–349. doi: 10.1177/1358863X09104222

Table 3.

Univariate Analyses of Demographic and Baseline Characteristics as Potential Risk Factors for Venous Stasis Syndrome, Venous Outflow Obstruction and Venous Valvular Incompetence

Variable ^$$	Endpoints
Variable ^$$	Venous Stasis Syndrome	Venous Outflow Obstruction	Venous Valvular Incompetence

	---------------------- Odds Ratios (95% Confidence Intervals) -----------------

Age at Visit Δ per 10 years	1.2 (1.1, 1.4)^†	1.7 (1.3, 2.2)^†	1.1 (0.96, 1.3)

Male	1.2 (0.8, 1.8)	2.1 (1.05, 4.0)^*	1.4 (0.9, 2.1)

Time Since VTE Event
Δ per 5 years	1.2 (1.03, 1.5)^*
10 vs 5		0.6 (0.4, 0.96)^*	0.7 (0.5, 1.01)
15 vs 10		0.9 (0.6, 1.2)	1.0 (0.8, 1.2)
20 vs 15		1.3 (1.03, 1.7)^*	1.4 (1.1, 1.7)^*
25 vs 20		2.0 (1.3, 3.1)^*	2.0 (1.3, 2.9)^*

VTE Case	5.7 (3.5, 9.5)^‡	3.3 (1.4, 7.6)^†	4.0 (2.4, 6.6)^‡
Unadjusted	5.7 (3.5, 9.5)^‡	3.3 (1.4, 7.6)^†	4.0 (2.4, 6.6)^‡

VTE Case	6.4 (3.8, 10.8)^‡	3.2 (1.3, 7.8)^*	3.6 (2.1, 6.2)^‡
Adjusted for age, gender, and time since event	6.4 (3.8, 10.8)^‡	3.2 (1.3, 7.8)^*	3.6 (2.1, 6.2)^‡

BMI	1.1 (1.04, 1.1)^‡	1.0 (0.9, 1.1)	1.0 (0.99, 1.1)

Prior Superficial Vein Thrombosis	4.2 (1.6, 10.7)^†	1.1 (0.3, 3.7)	2.1 (0.9, 4.8)

Prior Varicose Veins	3.7 (2.1, 6.5)^‡	2.0 (1.00, 4.2)	3.0 (1.8, 5.2)^‡

Lung Disease / Pulmonary Hypertension	1.5 (0.4, 5.4)	1.2 (0.5, 3.2)	2.3 (0.9, 6.0)

Prior venous stasis syndrome prior to the incident event	2.2 (0.7, 7.1)	6.4 (2.1, 19.8)^†	6.9 (2.0, 24.2)^†

^$$

Only variables that were significant in at least one analysis are shown

p-value<0.05

^†

p-value<0.01

^‡

p-value<0.001