In women with deep venous thrombosis (DVT), a case-control study was conducted to test the association between DVT and past exposure to oral contraceptive (OC) use. Based on the data below, what is the unadjusted odds of exposure to OC use among the cases of women with DVT compared to that among the controls without DVT? Oral Contraceptive Use Cases of DVT Controls
Yes 63 21
No 117 159
Total 180 180