Problem: A history of dietary supplement with calcium was recorded among 10,000 women over the age of 50. The women were followed for 2 years to determine if they experienced hip fracture. Calcium supplementation was reported by 31% of women who experienced hip fracture and by 46% of women without hip fractures. What are the odds of a hip fracture among women who are taking calcium supplements?
The answer should be in decimal, e.g. 0.25 (keep two digits after the digital point and round if necessary).