What about registered nurses? It's a 91/9 spit.
It is a direct result of patriarchal social attitudes combined with the fact that nursing is perceived as a subordinate role to medicine, and therefore beneath men.
So it's actually a manifestation of the same broad social problem as the disparity in tech, rather than the mirror image.
The American Association of Men in Nursing: http://www.aamn.org/
The Campaign for Nursing’s Future: https://www.discovernursing.com/men-in-nursing
Minority Nurse: http://minoritynurse.com/
Oregon Center for Nursing: http://oregoncenterfornursing.org/nursing-posters/
Hint - it has to do with getting in the medical school.