I had assumed this collection of data was directly connected to transgender athletes. Tatonka, you said it's a "possible factor." So my question (which I'm asking here because of that paywall): If it's not specifically and entirely about those athletes, what is the ostensible reason for doing this? Does the article say?
The questions asked are these:
- When was your first menstrual period?
- When was your most recent menstrual period?
- How much time do you usually have from the start of one period to the start of another ?
- How many periods have you had in the last year?
- What was the longest time between periods in the last year?