You are a doctor. You are trying to get through a busy clinic day when there is a knock at your office door. It is a pharmaceutical rep. Before you can say anything, he lets himself in, saying, “I’ll only take up a minute of your time, but I just have to tell you about this exciting new weight loss drug. It’s 95% effective at treating obesity in adults.” Sounds good right? Oo, he’s giving away a free pocket knife with the drug’s logo on it. Maybe you do have a minute to spare. You know you have some questions about the study that got this new drug approved.
You start by asking how much weight the study participants lost on average. Turns out it’s about 10% of their body weight in the first year. So women weighing 250 pounds at the start of the study weighed, on average, 225 pounds after a year.
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