Re: Black male nurses http://www.bls.gov/cps/cpsaat11.pdf
You then search for "Registered Nurses" or "nurses" and you should find it on page 211. This is for 2004. The stat is as follows: Women composes of 92.2%, African American compose of 10.1%.
So we have 7.8% male nurses. Now if we ASSUME the male nursing demographics is about the same as female nursing, then we have 10.1% of 7.8% which comes out to around 0.8% male African Americans. Again, this is a HUGE assumption as different cultures may have different support(or no support) for men going into nursing.
You can take a look around
http://www.bls.gov/cps/home.htm
There may be something in there that you can figure out as it has lots of data.
-Dan
Nursing News