Characteristics of women diagnosed with deep or superficial VTE during pregnancy or the postpartum period in Denmark, 1978-2013
| . | N (%) . |
|---|---|
| Women, total | 3934 (100.0) |
| VTE during pregnancy | 1427 (36.3) |
| Deep venous thrombosis | 1150 (29.2) |
| Superficial venous thrombosis | 277 (7.0) |
| VTE during the postpartum period | 2507 (63.7) |
| Deep venous thrombosis | 1969 (50.1) |
| Superficial venous thrombosis | 538 (13.7) |
| Age at VTE diagnosis, y | |
| ≤17 | 14 (0.4) |
| 18-34 | 3130 (79.6) |
| 35-49 | 790 (20.0) |
| Calendar year of VTE diagnosis | |
| 1978-1985 | 754 (19.2) |
| 1986-1993 | 814 (20.7) |
| 1994-2001 | 856 (21.8) |
| 2002-2009 | 949 (24.1) |
| 2010-2013 | 561 (14.3) |
| Timing of the VTE event | |
| First trimester* | 245 (6.2) |
| Second trimester* | 602 (15.3) |
| Third trimester* | 710 (18.0) |
| Early postpartum period† | 2261 (57.5) |
| Late postpartum period | 116 (2.9) |
| VTE location | |
| Pulmonary embolism | 522 (13.3) |
| Deep and superficial thrombosis of the lower extremities | 3023 (76.8) |
| Other locations | 389 (9.9) |
| Covariates | |
| Obesity‡ | 536 (13.6) |
| Maternal smoking | 517 (13.1) |
| Diabetes§ | 30 (0.8) |
| Chronic renal failure§ | 7 (0.2) |
| Previous VTE§ | 346 (8.8) |
| Other inflammatory or rheumatoid disease§ | 38 (1.0) |
| Surgery‖ | 76 (1.9) |
| Fracture‖ | 31 (0.8) |
| Cesarean section | 348 (8.8) |
| Bleeding during the postpartum period | 94 (2.4) |
| . | N (%) . |
|---|---|
| Women, total | 3934 (100.0) |
| VTE during pregnancy | 1427 (36.3) |
| Deep venous thrombosis | 1150 (29.2) |
| Superficial venous thrombosis | 277 (7.0) |
| VTE during the postpartum period | 2507 (63.7) |
| Deep venous thrombosis | 1969 (50.1) |
| Superficial venous thrombosis | 538 (13.7) |
| Age at VTE diagnosis, y | |
| ≤17 | 14 (0.4) |
| 18-34 | 3130 (79.6) |
| 35-49 | 790 (20.0) |
| Calendar year of VTE diagnosis | |
| 1978-1985 | 754 (19.2) |
| 1986-1993 | 814 (20.7) |
| 1994-2001 | 856 (21.8) |
| 2002-2009 | 949 (24.1) |
| 2010-2013 | 561 (14.3) |
| Timing of the VTE event | |
| First trimester* | 245 (6.2) |
| Second trimester* | 602 (15.3) |
| Third trimester* | 710 (18.0) |
| Early postpartum period† | 2261 (57.5) |
| Late postpartum period | 116 (2.9) |
| VTE location | |
| Pulmonary embolism | 522 (13.3) |
| Deep and superficial thrombosis of the lower extremities | 3023 (76.8) |
| Other locations | 389 (9.9) |
| Covariates | |
| Obesity‡ | 536 (13.6) |
| Maternal smoking | 517 (13.1) |
| Diabetes§ | 30 (0.8) |
| Chronic renal failure§ | 7 (0.2) |
| Previous VTE§ | 346 (8.8) |
| Other inflammatory or rheumatoid disease§ | 38 (1.0) |
| Surgery‖ | 76 (1.9) |
| Fracture‖ | 31 (0.8) |
| Cesarean section | 348 (8.8) |
| Bleeding during the postpartum period | 94 (2.4) |
Maternal body mass index data available from 2004. Smoking data available from 1991.
First trimester: from conception up to and including 12 weeks of gestation (84 days from conception). Second trimester: from 85 days after conception up to and including 197 days from conception. Third trimester: from 198 days of conception until the day of delivery.
Early postpartum period: from the day after the delivery date until 6 weeks after delivery date. Late postpartum period: 6 to 12 weeks after delivery.
Body mass index, ≥25 kg/m2.
Any time before the VTE event.
Within 90 days before the VTE event.