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Abstract:
A table of different contraceptives and their reliability, indicated as the probability of pregnancy in one year's usage.
Question:
Which contraceptives are most reliable?
Answer:
Method |
Probability of pregnancy in one year |
Comment |
|
Theoretical if the method is always used perfectly |
In practice, including for example that a condom can
break or that one forgets to take a contraceptive pill |
||
| No contraceptive | 85% |
85% |
|
| Coitus interruptus (Withdrawing the penis before ejaculation) | 9% |
40% |
|
| Diaphragm | 5% |
18% |
|
| Copper loop | 2% |
5% |
Note: A Copper loop can also be inserted after an unprotected sexual relatiion. If inserted the day after, its reliability is the same as specified in this table. |
| Acute contraceptive pill | An acute contraceptive pill is not suitable for regular use many times a year, and thus reliability data for regular use several times per year cannot be given in this table. But the probability of getting pregnant if such a pill is taken is less than 3 %. | An acute contraceptive pill can be taken the day after an unprotected sexual relation. However, on the day after an unprotected sexual relation, insertion of a copper loop is an even safer way of preventing pregnancy. | |
| Contraceptive pill, estrogen and progestogen combined | Very low, less than 1 % |
Also very low |
|
| prophylactic condom | 2% |
12% |
Prophylactic condom or a combination of condom and other means are the only means which will also protect against sexually transmitted diseases such as Clamydia and HIV. |
| Combination of contraceptive pill and condom | 0% |
0,4% |
|
| IUD, Injection, Implant, Patch, Ring | Less than 0,6% |
Less than 0,8% |
|
| IUS | Less than 0,2% |
||
| Hormone implantation | 0,2% |
0,2% |
|
| Female sterilization | 0,2% |
0,4% |
|
| Depo-provera | 0,3% |
0,3% |
|
| Male sterilization | 0,1% |
0,15% |
|
| Abstention from sex | 0% |
0% |
|
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