Frequencies for first 10,000 rows of empstat variable in namcs1998 dataset :

 employment |
  status of |
  physician |      Freq.     Percent        Cum.
------------+-----------------------------------
      Owner |      6,565       65.65       65.65
   Employee |      2,950       29.50       95.15
 Contractor |        485        4.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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