Frequencies for first 10,000 rows of empstat variable in namcs2001 dataset :

 employment |
  status of |
  physician |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,696       76.96       76.96
          2 |      1,967       19.67       96.63
          3 |        337        3.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016