The links above include a collection of resources on the Standard Days Method® (SDM). The SDM is a simple and effective modern family planning method. Women with menstrual cycles between 26 and 32 days long can use SDM to prevent pregnancy by avoiding unprotected sex on days 8 to 19 of their cycles. SDM can be used with CycleBeads®, a visual tool that helps a woman track her cycle and aids couples in communicating about when unprotected sex should be avoided. Studies have shown that SDM is 95 percent effective with correct use and 88 percent effective with typical use.
The collection of resources include: