Frequencies for first 10,000 rows of empstat variable in namcs2012 dataset :

 Ownership status |
     of physician |      Freq.     Percent        Cum.
------------------+-----------------------------------
          Unknown |        114        1.14        1.14
       Full-owner |      4,565       45.65       46.79
       Part-owner |      2,475       24.75       71.54
         Employee |      2,462       24.62       96.16
       Contractor |        384        3.84      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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