Table 4.

Characteristics of women from the reference cohort experiencing venous thrombosis

Patient	Age at event	BMI	Thrombophilia	Additional risk factors	Type of event	Antithrombotic prophylaxis
1	31	37.1	No	No	Antepartum SVT in the left leg	None
2	33	18.3	No	Previous SVT after Caesarean section	Antepartum DVT in the left leg	None
3	28	17.3	FVL heterozygous	Family history for VTE	Antepartum (37 weeks) DVT in the right leg	LMWH*†
4	33	NA	NA	No	Postpartum SVT in the right leg	None
5	37	NA	NA	No	Postpartum bilateral SVT	None
6	43	NA	NA	No	Antepartum DVT in the left leg	None
7	22	NA	NA	No	Postpartum DVT in the left leg	None
8	35	NA	NA	No	Postpartum bilateral SVT	None
9	36	21.3	FVL heterozygous+ PC deficiency	Previous DVT during oral contraceptive	Antepartum (21 weeks) DVT in the left leg	LMWH*‡
10	33	18.7	FVL heterozygous	No	Antepartum DVT in the left leg	None
11	35	NA	NA	No	Postpartum SVT in the right leg	None

*Started when pregnancy test was positive.

†Treatment withdrawn for physician's choice at 32 weeks.

‡Treatment withdrawn for patient's choice at 20 weeks.

BMI, body mass index; DVT, deep vein thrombosis; FVL, factor V Leiden LMWH, low-molecular-weight heparin; NA, not available; PC, protein C; PE, pulmonary embolism; SVT, superficial vein thrombosis.