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

               who owns the practice? |      Freq.     Percent        Cum.
--------------------------------------+-----------------------------------
         physician or physician group |      7,712       77.12       77.12
health maintenance organization (hmo) |        243        2.43       79.55
       medical/academic health center |        314        3.14       82.69
                       other hospital |        625        6.25       88.94
        other health care corporation |        931        9.31       98.25
                                other |        175        1.75      100.00
--------------------------------------+-----------------------------------
                                Total |     10,000      100.00

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