Pregnancy After Different Forms of Contraception

    The percentage of women experiencing an unintended pregnancy during the
    first year of typical use and first year of perfect use of
    contraception and the percentage continuing use at the end of the first
    year. United
    State.

    Pregnancy incidence during different kind of contraceptives.

    % of Women Experiencing an Accidental Pregnancy within the First Year of Use % of Women Continuing Use at One Year 3
    Method Typical Use  Perfect Use

    (4)
    Chance 85 85  
    Spermicides 26 6 40
    Periodic abstinence 25   63
      Calendar   9  
      Ovulation method   3  
      Sympto-thermal   2  
    Post-ovulation   1  
    Withdrawal 19 4  
    Cap      
      Parous women 40 26 42
      Nulliparous women 20 9 56
    Sponge      
      Parous women 40 20 42
      Nulliparous women 20 9 56
    Diaphragm 20 6 56
    Condom      
      Female (Reality) 21 5 56
      Male 14 3 61
    Pill 5   71
      progestin only   0.5  
      combined   0.1  
    IUD:      
      Progesterone T: 2.0 1.5 81
      Copper T 380A 0.8 0.6 78
      LNg 20 (Mirena) 0.1 0.1 81
    Depo Provera 0.3 0.3 70
    Norplant and Norplant-2 0.05 0.05 88
    Female sterilization 0.5 0.5 100
    Male sterilization 0.15 0.10 100