The incidence of endometrial cancer in postmenopausal women currently using unopposed estrogen therapy is 4.0 per 1000 woman-years, whereas in non-users the corresponding rate is 0.8 per 1000 woman-years. Calculate the relative rate. Of 122 never-smoking middle-aged women diagnosed with nonfatal myocardial infarction (heart attack), 18% reported their spouse currently smoked; 9% of 267 comparable women without heart disease had smoking spouses. Calculate the odds ratio