MS-2051

A clinical trial was conducted to investigate the effectiveness of a new drug in preventing hip fractures in women over the age of 60. One group of 1,000 women received the new drug while another group of 1,400 women received a placebo. The incidence of hip fractures in the drug group was 2% compared to 4% in the placebo group. What is the number needed to treat to prevent one hip fracture?