They're more effective, yes, but carry more risks since you're keeping a foreign object in you for up to 10 years at a time. You can see the various options an

They're more effective, yes, but carry more risks since you're keeping a foreign object in you for up to 10 years at a time. You can see the various options and pregnancy rates (both based on the typical use and the perfect use case) for the first year: http://www.arhp.org/Publications-and-Resources/Quick-Reference-Guide-for-Clinicians/choosing/failure-rates-table http://www.arhp.org/Publications-and-Resources/Quick-Referen... Personally, rates like these makes me glad to be a gay male.