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...

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