Table 4.

Absolute VTE risk in pregnancy and postpartum in women with prior unprovoked VTE, estrogen-associated VTE, and provoked VTE

Past VTEAntepartum risk*Postpartum risk†
%95% CI%95% CI
Unprovoked VTE 3.6 1.4-8.9 3.1 0.5-15.7 
Estrogen-associated VTE 6.4 3.9-10.4 11.7 5.8-22.2 
Provoked VTE (non-estrogen associated) 1.0 0.19-5.7 7.1 1.9-22.6 
Past VTEAntepartum risk*Postpartum risk†
%95% CI%95% CI
Unprovoked VTE 3.6 1.4-8.9 3.1 0.5-15.7 
Estrogen-associated VTE 6.4 3.9-10.4 11.7 5.8-22.2 
Provoked VTE (non-estrogen associated) 1.0 0.19-5.7 7.1 1.9-22.6 

VTE includes deep vein thrombosis and pulmonary embolism.

*

Antepartum risk estimates are derived from pooled proportions among women with no antepartum prophylaxis use.3 

†

Postpartum risk estimates are limited to 1 study without postpartum prophylaxis use (n = 120).48 

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