Frequencies for first 10,000 rows of prov1810 variable in pos1993 dataset :

   resident |
    program |
approved by |
        ama |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,856       88.56       88.56
          N |        989        9.89       98.45
          Y |        155        1.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016