Frequencies for first 10,000 rows of clintype variable in nhamcsopd2011 dataset :

          Clinic type |      Freq.     Percent        Cum.
----------------------+-----------------------------------
     General medicine |      2,767       27.67       27.67
              Surgery |      2,319       23.19       50.86
           Pediatrics |      1,275       12.75       63.61
Obstetrics/Gynecology |      1,608       16.08       79.69
      Substance abuse |        218        2.18       81.87
                Other |      1,813       18.13      100.00
----------------------+-----------------------------------
                Total |     10,000      100.00

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