[exporectomy]

I suspect a 2nd factor is competitive vs well-defined. CEO for example is people-oriented but 70% male. Maybe because it's also competitive.

[Out_of_Characte]

Horse riding is a fun example of your observation. Its above 30 to 1 women versus male riders. Untill you enter the higher level of competitions, then its the reverse.

I've done horse riding, its unique and fun but definitely not for me.