Frequencies for first 10,000 rows of prov1820 variable in pos2006 dataset :

   resident |
    program |
approved by |
      other |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,710       87.10       87.10
          N |      1,143       11.43       98.53
          Y |        147        1.47      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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