One can get an idea of the relevant frequencies from table 13 of the doctoral completion survey here [1]. [1]https://ncses.nsf.gov/pubs/nsf19301/data https://n

One can get an idea of the relevant frequencies from table 13 of the doctoral completion survey here [1]. [1]https://ncses.nsf.gov/pubs/nsf19301/data https://ncses.nsf.gov/pubs/nsf19301/data