Are women more likely to return for a second event if the gender ratio of the first event they attended was more balanced? This could tell you whether the difference is simply a result of the community being mostly male right now, or if it’s due to some other reason(s).
I looked into this and of the women that came to just 1 event, there was an average of 49% female attendance. Of women who came to 2 or more events, the first event they came to had, an average of 45% female attendance.
Also of the women who came to 5 or more events, half of them came to an event with less than 40% female attendance and half of them came to an event with more than 40%.