7. A case-control study using two controls per case was designed to test the hypothesis that lack of regular exercise (the exposure) increases the risk of bone fractures (the outcome) in elderly women. Of the 600 women studied (200 cases and 400 controls), 128 were regular exercisers (26 cases and 102 controls). Based on this information, determine if a lack of regular exercise is a risk factor for bone fractures in this group. Report the crude odds ratio and its 95 percent confidence interval. Also, interpret your results in words