Frequencies for first 10,000 rows of clintype variable in nhamcsopd2010 dataset :

          clinic type |      Freq.     Percent        Cum.
----------------------+-----------------------------------
     general medicine |      4,300       43.00       43.00
              surgery |      1,899       18.99       61.99
           pediatrics |        829        8.29       70.28
obstetrics/gynecology |      1,176       11.76       82.04
      substance abuse |        124        1.24       83.28
                other |      1,672       16.72      100.00
----------------------+-----------------------------------
                Total |     10,000      100.00

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