Table 1.

Characteristics of the study population

CharacteristicsStockholm breast cancer cohort (N = 4,261)
Age at diagnosis (y)
 mean (SD)58.1 (9.5)
Year of diagnosis, % (N)
 2001–200447.7 (2,031)
 2005–200852.3 (2,230)
Menopausal status, % (N)
 Premenopausal23.8 (1,014)
 Postmenopausal70.0 (2,982)
 Missing6.2 (265)
VTE history, % (N)
 No97.9 (4,171)
 Yes2.1 (90)
Chemotherapy, % (N)
 No61.3 (2,613)
 Yes38.7 (1,648)
Endocrine therapy, % (N)
 No16.2 (692)
 Yes83.8 (3,569)
PRS
 Mean (SD)0.10 (0.03)
 Min–max0.02–0.27
Factor V Leiden, % (N)
 Non-carrier92.0 (3,920)
 Carrier8.0 (341)