Table 3.

Multivariate analysis using COX regression for the risk of recurrence

Clinical factor	HR	P-value	95% CI
Female gender	1.022	0.927	0.636 to 1.644
Family history of PE	2.851	0.003	1.422 to 5.716
Psychotropic medication	1.252	0.471	0.679 to 2.309
Provoked PE	0.506	0.007	0.308 to 0.831
PE with cardiac involvement	1.634	0.043	1.015 to 2.632
Associated DVT	1.216	0.471	0.679 to 2.309
Anticoagulation duration after PE	1.023857	0.196	0.988 to 1.061

DVT, deep vein thrombosis; PE, pulmonary embolism; VTE, venous thromboembolism.