|
Technique:
| Method |
Failure Rate defined as (pregnancies / 100 woman-years (%) ) |
| Norplant; failure rate 0.2-1.1 |
0.2-1.1 |
| Implanon (3) |
fewer than 0.1 in 100 over 3 years (3) |
| Mirena coil |
0.09 |
| combined pill |
0.2-0.3 |
| mini-pill |
0.3-5 |
| condom |
2-15 |
| diaphragm and spermicide |
5 |
| IUCD (see below) |
0.3-4 |
| coitus interruptus |
30 |
| rhythm method |
30 - 40 |
| Depo Provera |
< 0.5 |
| none |
60-70 |
Interpretation - 5% failure rate means that if 100 women used this form of
contraception, 5 would be pregnant within one year.
Reference:
- Drug and Therapeutics Bulletin 1996; 34 (12): 93-5.
- BNF 7.3
- NICE (October 2005). Long-acting reversible
contraception
|
