As far as I know, there is no evidence to suggest that a gender gap exists for the same skill level in the same region performing the same job. Does anyone have

As far as I know, there is no evidence to suggest that a gender gap exists for the same skill level in the same region performing the same job. Does anyone have evidence for this? And if not, the "gender pay gap" seems like a total non-issue. It is perfectly OK that women choose to go into jobs with lower salaries (as long as a man in that position would make the same).