Frequencies for first 10,000 rows of empstat variable in namcs2008 dataset :

 employment |
  status of |
  physician |      Freq.     Percent        Cum.
------------+-----------------------------------
      blank |         60        0.60        0.60
      owner |      6,056       60.56       61.16
   employee |      3,644       36.44       97.60
 contractor |        240        2.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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