People who was in fact above 50 years dated had schedules that ranged by on average eleven

Across the 165,668 time periods i reviewed, an average monthly period size try 28.seven days. This might be consistent with prior observations towards the typical cycle size various other communities nine–11 .

We discovered period size and variability differed considerably across the reproductive lifetime, regarding less than 20 to more than half a century old. People not as much as 2 decades dated had monthly period cycles 29.3 days long on average, 1.6 weeks more than this new twenty-eight.7-go out mediocre of these thirty five in order to 39 yrs . old. Someone forty so you’re able to forty two and you may forty five so you’re able to forty-two years of age got reduced cycles, averaging twenty-eight.2 and 28.cuatro weeks, respectively. Men and women more than half a century dated got lengthened time periods, averaging 30.8 months.

We learned that people’s menstrual cycle lengths varied of the an average of cuatro to 11 days according to age. As an example, for people less than 2 decades old, period lengths varied by on average 5.three days. Читать далее →