This is usually a topic that generates some very interesting discussion. A few words of advice. Becareful when looking for "female friendly" programs. It's hard to get a true handle on that. Many times you won't get a feel for this until you interview.
1. Be careful when looking into programs which have no women and have never had a woman. I guess someone has to be the first, but residency is hard enough w/o having to tackle gender equality issues too.
2. Gut feel is the best measure. If a place feels anti-ovary, it probably is.
3. If a female resident pulls you aside and says "don't come here," that may be a place to avoid like the plague.
4. Some programs are only as "female friendly" as their last good female resident. Meaning. . . .as soon as they get a bad one (or pregnant one), it may be a long time before they take another. . . .if ever.
5. Places with multiple female faculty and residents are probably a good bet for being female friendly.
6. Just because you get an interview at a place, doesn't mean they like women. Some consider it the PC thing to do.
7. Beware of places that have "fired" female residents (see #4).
8. If they take you by the call room on the tour and there are centerfolds and or other porn-related material in plain site, that should raise a flag or two
Here's my take on the places I interviewed at 4 years ago
1. Mayo - receptive to women. Had a few in the program.
2. Cincy - No women. Definite sausage club. I can't believe they've changed in such a short period of time.
3. Harvard - women residents and faculty. receptive to women.
4. Loyola - recently fired a female. Unsure if receptive to XX.
5. Kentucky - Probably would rather go w/o a resident than have a female.
6. Cleveland Clinic - Female faculty/resident. Definitely receptive.
7. MSU kalamazoo - Porn in call room (see #8 above).
8. Indiana - No way in hell.
9. Toledo - Had a female resident. Mildly receptive.
10. Henry Ford - Not sure
11. Howard - Female faculty. Receptive to having women.
By no means is any of this law. Just MY 2 cents.