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. 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 2.

Baseline Characteristics by Venous Stasis Syndrome, Venous Outflow Obstruction and Venous Valvular Incompetence Status

Baseline Characteristic Venous Stasis
Syndrome
Venous Outflow
Obstruction
Venous Valvular
Incompetence

Yes
(n=161)
No
(n=204)
Yes
(n=43)
No
(n=319)
Yes
(n=136)
No
(n=226)

Age at Visit
(years)
Mean(SD) 67.2 (14.3) 62.6 (14.6) 72.7 (12.4) 63.2 (14.5) 65.7 (14.3) 63.6 (14.7)

Median
(Q1,Q3)

68.4
(58.5,78.2)

64.2
(50.8,74.0)

76.2
(64.9,80.7)

64.8
(51.6,74.4)

67.9
(55.5,76.8)

65.1
(53.8,74.8)

Male n (%) 89 (55.3%) 103 (50.5%) 29 (67.4%) 160 (50.2%) 78 (57.4%) 112 (49.6%)

Time Since
Event (years)
Mean(SD) 13.9 (7.0) 12.4 (5.2) 13.5 (7.9) 12.6 (5.9) 13.4 (7.1) 12.3 (5.5)

Median
(Q1,Q3)

12.9
(8.4,15.2)

11.3
(8.5,15.2)

11.5
(8.1,20.2)

11.5
(8.3,16.6)

11.9
(8.1,17.7)

11.1
(8.3,15.4)

VTE Case n (%) 135 (83.9%) 97 (47.6%) 36 (83.7%) 195 (61.1%) 111 (81.6%) 119 (52.7%)

Congestive Heart Failure and/or
cardiomyopathy
n (%) 15 (9.3%) 14 (6.9%) 6 (14.0%) 23 (7.2%) 15 (11.0%) 14 (6.2%)

Body Mass
Index (kg/m2 )
Mean(SD) 27.7 (5.0) 25.9 (4.4) 26.8 (4.2) 26.6 (4.9) 27.3 (5.5) 26.3 (4.3)

Median
(Q1,Q3)

27.5
(24.2,30.9)

25.7
(23.0,28.1)

26.1
(22.8,30.1)

26.4
(23.5,29.2)

27.1
(23.6,30.4)

28.5
(23.3,28.6)

Prior Superficial Thrombosis n (%) 18 (11.2%) 6 (2.9%) 3 (7.0%) 21 (6.6%) 13 (9.6%) 11 (4.9%)

Prior Varicose Veins n (%) 48 (29.8%) 21 (10.3%) 13 (30.2%) 56 (17.6%) 41 (30.2%) 28 (12.4%)

Lung Disease /
Pulmonary Hypertension
n (%) 12 (7.6%) 7 (3.4%) 3 (7.0%) 15 (4.7%) 8 (5.9%) 11 (4.9%)

Venous Stasis Syndrome prior
to the incident VTE event
n (%) 15 (9.3%) 3 (1.5%) 4 (9.3%) 14 (4.4%) 14 (10.3%) 4 (1.8%)

Chronic Renal Disease n (%) 1 (0.6%) 0 (0.0%) 1 (2.3%) 0 (0.0%) 1 (0.7%) 0 (0.0%)

Serious Liver Disease n (%) 0 (0.0%) 1 (0.5%) 1 (2.3%) 0 (0.0%) 1 (0.7%) 0 (0.0%)