| Effectiveness |
|
|
| If 1,000 women
have unprotected sex once |
|
| in the second or third
week of their cycle |
|
| #
of Pregnancies |
| %
Reduction |
| No
treatment |
| 80 |
|
|
| Combined |
|
| ECPs |
|
| 20 |
| 75% |
|
|
| Progestin |
|
| Only
ECPs |
|
| 10 |
| 88% |
| IUD
Insertion |
| 1 |
| 99% |