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. Author manuscript; available in PMC: 2014 May 1.
Published in final edited form as: Am J Med. 2013 May;126(5):443–449. doi: 10.1016/j.amjmed.2012.12.016

Table 2.

Identifiable provoking factors for first non-catheter-related venous thromboembolism in 76 patients with sickle cell disease

Provoking Factor Number (percent)
Hormone-related
 Pregnancy or post-partum 10 (13.2)
 Oral Contraceptives 3 (3.9)
Surgery* 4 (5.3)
Hospitalization Status
 Hospitalization -associated† 18 (23.7)
 Unknown hospitalization status 16 (21.1)
No Provoking Factors Identified (Idiopathic)‡ 25 (32.9)

Provoking factors are listed as mutually exclusive variables.

*

Surgery does not include cesarean section. Venous thromboembolism that occurred after cesarean section were listed as pregnancy-related.

†

Defined as venous thromboembolism occurring > 24 hours after admission or occurring within 90 days post-discharge. Does not include surgery or pregnancy-related admissions.

‡

Includes only patients who had complete information about all provoking factors.