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Temperature Method

By measuring basal body temperature, it is possible to tell reliably whether ovulation has occurred. The strict temperature method according to Doering is 99.2% reliable = Pearl Index 0.8.

The temperature method was developed by Prof. Gerhard Doering in Munich in the 1950s. In its strict form it is extremely reliable - however, for cycles with a stepped rise in temperature following ovulation it is not possible to identify fertile and non-fertile days.

The method:
At least three measurements of basal body temperature have to be 2/10 higher than the six lower preceding measurements. This rule is used in an extended form by fertility monitors such as Cyclotest and LadyComp as well as in the sympto-thermal methods (Roetzer and Sensiplan).



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