New York: Most women have wrong perception about intrauterine devices (IUDs) safety and effectiveness in preventing unwanted pregnancy, a new survey has revealed.Many of the women surveyed said that they didn`t know that IUDs are more effective contraceptives than the birth control pill and that the devices didn`t raise the risk of getting a sexually transmitted disease (STD), the New York Daily News reported.IUDs, which are small plastic or copper-and-plastic objects inserted into the uterus, are more than 99 percent effective at preventing pregnancy and can be left implanted for years.In contrast, the birth control pill has been found to be about 95 percent effective.
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