Frequencies for first 10,000 rows of clinic variable in nhamcsed2000 dataset :

   hospital |
clinic code |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,379       83.79       83.79
          2 |        883        8.83       92.62
          3 |        357        3.57       96.19
          4 |        277        2.77       98.96
          5 |        104        1.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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