Part BPlease interpret or for un matched case-control study calculated in the previous question

Investigators wanted to study the relationships between ectopic pregnancy and induced abortion ("exposure"). They recruited 18 women who had ectopic pregnancy and matched them by age to 18 women without history of ectopic pregnancy. At the end of the study investigators found the following for each case and control. ['+' indicates induced abortion (exposed), '-' indicates no history of induced abortion (unexposed)]. Pair Case Control 4 10 11 12 13 14 .. ... ... 15 16 17 18 + Unmatch pairs and calculate OR for unmatched case=control design. Show calculations for credit