Over in the New York Times, Gregor Aisch and Bill Marsh have an explainer with superb infographics on the comparative effectiveness of various contraceptive methods with respect to unplanned pregnancy. The graphs compare actual with ideal use, and have a slider so that you can see how they do at each year of use. It’s pretty clear which methods are best over 10 years: IUDs, implants, and sterilization (not pictured, below). These, of course, have costs. So other methods that are less effective may still be better for some patients. Only the patient can decide that for themselves.