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Pearl index
The safety of different prophylaxis methods can be judged and compared with the help of the so-called Pearl index. The Pearl index indicates like much of 100 sexually active women the one calendar year uses a certain prophylaxis method for a long time, have got pregnant. Ever it is smaller for the number of the Pearl index, the safer the method is.
Example:
The calendar method has the Pearl index 35th this means that 35 women have got pregnant from 100 sexually active women who have prevented one year with the calendar method for a long time. The hormone intrauterine device has the Pearl index 0,1st this means that 1 woman has got pregnant from 1000 sexually active women who have prevented one year with the hormone intrauterine device for a long time.
The Pearl index is definite only at a correct application.
These informations may be considered a substitute for a piece of medical advice in no case. The content of health-illness.com doesn't can and may be put into any case to make diagnoses or carry out self medical treatment independently.
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