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Number of menstrual cycles and pregnancies during perfect use and typical use and the number of method failures, and the Pearl Index calculated from these numbers.
| Pearl Index | Pregnancies | Woman-Years | Cycles | |
|---|---|---|---|---|
| Perfect | 1.0 | 17 | 1661a | 21,597 |
| Typical | 6.9 | 1273 | 18,548b | 224,563 |
| Method | 0.5 | 102 | 18,548b | 224,563 |
Calculated using the number of registered cycles
Calculated using the number of days since starting to use the application
