Table 1.

Risk factors for DVT in Sudanese women using unviarite and multivariate analyses

	Univarite analyses			Multivariate analyses
Variable	OR	95% CI	P	OR	95% CI	P
Age, years	0.8	0.8–0.9	0.009	1.06	1.0–1.2	0.1
Primigravidae	2.2	1.2–4.3	0.01	2.7	1.2–4.9	0.01
Family history of DVT	7.4	2.3–24.2	0.001	5.9	1.68–30.5	0.005
Past history of DVT	6.3	1.6–24.3	0.008	4.7	0.9–25.0	0.06
Cesarean section delivery	2.0	1.0–3.8	0.02	2.2	1.1–4.4	0.02
Body mass index	1.0	0.9–1.0	0.4	1.0	0.9–1.0	0.4
Blood group
A vs none A	1.8	0.9–1.8	0.08	2.0	0.8–4.9	0.1
O vs none O	0.7	0.4–1.3	0.3	0.4	0.08–2.1	0.2
Preeclampsia	0.9	0.4–2.2	0.9	1.0	0.4–2.5	0.8

Abbreviation: DVT, deep venous thrombosis.