Frequencies for first 10,000 rows of prov1815 variable in pos2002 dataset :

   resident |
    program |
approved by |
        aoa |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,812       88.12       88.12
          N |      1,170       11.70       99.82
          Y |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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