Pregnancy After Different Forms of Contraception
Contraception
Obie Editorial Team
The percentage of women experiencing an unintended pregnancy during the first year of typical use and the first year of perfect use of contraception and the percentage continuing use at the end of the first year in the United States:
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 |