Most methods of contraception have some chance of failure, which increases when used imperfectly. Only abstinence, male castration or hysterectomy are 100% effective.
Primary (more effective) measures:
(1) combination oral contraceptives
(2) implantable hormones
(3) injectable hormones: progestin only (Depo-Provera), combination (Lunelle)
(4) intrauterine device (IUD)
(5) female sterilization with interruption of the fallopian tube (clips or partial salpingectomy)
(6) male sterilization with interruption of the vasa deferentia (clips or vasectomy)
|
Rate Unintended Pregnancy |
Perfect Practice |
Usual Practice |
|
combination oral contraceptives |
0.1% |
5% |
|
implantable hormones |
0.05% |
0.05% |
|
injectable hormones |
0.3% |
0.3% |
|
IUD |
0.1 - 1.5% |
0.1 - 2.0% |
|
fallopian tube interruption |
0.5% |
0.5% |
|
vasa deferens interruption |
0.5% |
0.5% |
Secondary (less effective) measures (barrier methods):
(1) condom with spermicide
(2) diaphragm with spermicide
(3) cervical cap with spermicide
|
Rate Unintended Pregnancy |
Perfect Practice |
Usual Practice |
|
condom with spermicide |
3% |
14% |
|
diaphragm with spermicide |
6% |
20% |
|
cervical cap with spermicide |
9% |
20% |
NOTE: Use of a condom, diaphragm or cervical cap without spermicide significantly decreases the effectiveness of these methods
Specialty: Obstetrics & Gynecology
ICD-10: ,
