Keywords: SDM-circle3.svg Based on Image SDM-circle2 gif The Standard Days Method works for women who always have menstrual cycles between 26 and 32 days in length Avoiding sexual intercourse on the days labeled 'fertile' results in a pregnancy rate of 5 per year The method can also be used to achieve pregnancy - the woman has sexual intercourse on the days labeled 'fertile' en wikipedia Econt CommonsHelper 2007-08-28 Vargklo wikipedia en Vargklo original upload log page en wikipedia SDM-circle2 svg 2007-08-28 23 41 Vargklo 393×393×0 26481 bytes Based on Image SDM-circle2 gif The Standard Days Method works for women who always have menstrual cycles between 26 and 32 days in length Avoiding sexual intercourse on the days labeled 'fertile' results in a pregnancy rate of 5 per year The method Natural family planning |