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. Author manuscript; available in PMC: 2013 Oct 1.
Published in final edited form as: Am J Med. 2012 Aug 8;125(10):1010–1018. doi: 10.1016/j.amjmed.2012.03.007

Table 1.

Baseline characteristics of patients with venous thromboembolism.

Chronic obstructive pulmonary disease
Total
(n=2488)
Yes
(n =484)
No
(n = 2004)
p-value

Age, years (mean±SD) 63.8 ± 18.1 68.2 ± 15.2 62.7 ± 18.6 <0.0001

Age > 65 years, n (%) 1332 (53.5) 308 (63.6) 1,024 (51.1) <0.0001

Body mass index, kg/m2 (mean±SD) 28.7 ± 7.7 28.6 ± 8.9 28.7 ±7.3 0.86

Male, n (%) 1104 (44.5) 215 (44.5) 889 (44.5) 0.98

Ethnicity, n (%)
 Caucasian 2231 (89.7) 439 (90.7) 1,792 (89.4) 0.4
 African-American 81 (3.3) 13 (2.7) 68 (3.4) 0.42
 Asian 11 (0.4) 0 (0) 11 (0.6) 0.03
 Hispanic 43 (1.7) 9 (1.9) 34 (1.7) 0.81
 Other 21 (0.8) 7 (1.5) 14 (0.7) 0.13

Developed venous thromboembolism during hospitalization for another condition, n (%) 700 (28.1) 173 (35.7) 527 (26.3) <0.0001

Length of stay, days (mean±SD) 10.6 ± 16.1 12.4 ± 16.3 10.1 ± 16 0.01

Venous thromboembolism diagnostic category, n (%)
 Definite 2320 (93.8) 454 (94.6) 1866 (93.4) 0.42
 Probable 80 (3.2) 15 (3.1) 65 (3.1) 0.89
 Possible 74 (3.0) 11 (2.3) 63 (3.2) 0.32

SD, standard deviation.