Table 1:

Baseline characteristics of the study after removal of Tromsø Study second visit samples and participants with active cancer at time of blood sampling.

	Cases	Controls
Participants	80	88
Median age [range]	65 [28–83]	65 [28–83]
Sex (male)	32 (40%)	39 (44%)
BMI (mean±SD)	27.0±4.1	24.7±3.5
Smoking	17 (21.3%)	32 (36.4%)
Cardiovascular disease*	19 (23.8%)	13 (14.8%)
Diabetes†	4 (5.0%)	3 (3.4%)
Years to VTE (mean & [range])	3.82 [0.09–6.85]
DVT	55 (69%)
PE	25 (31%)
Unprovoked VTE	34 (43%)
Cancer (at event)	17 (31%)
Surgery/trauma	20 (25.0%)
Immobilization§	15 (18.8%)
Acute medical condition	14 (17.5%)
Other provoking factor¶	4 (5.0%)
Estrogen use**	6 (7.5%)
Pregnancy	0 (0%)

^*Self-reported history of myocardial infarction, angina or stroke

^†Self-reported diabetes mellitus

^§Immobility includes bed rest>3days, longtime travels with car, boat, train or by air >4 hours within last 14 days, or other type of immobilization.

^¶Other provoking factor described by a physician in the medical record (e.g. intravascular catheter).

^**Use of estrogen containing oral contraceptives or hormone replacement therapy