emergency contraceptives: failure rate,20%Depro-vera: failure rate, dose,3%, injection Q 3 monthsContraceptive patch: failure rate, effective different women2%, larger women less effective, wear 3 weeksHormone implants: failure rate, how many rods where, duration>1% 2 rods in arm, several yearsVaginal ring: Failure rate,2% inserted selfIUD: types, failure rate, duration, increased risk for?,Copper or hormone releasing. 0.8%m 1-10 years, risk of uterine perforation, PID, increase cramp and bleeding for first few cycles