Frequencies for first 10,000 rows of clinic variable in nhamcsed1995 dataset :

   hospital |
clinic code |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,855       88.55       88.55
          2 |        851        8.51       97.06
          3 |        177        1.77       98.83
          4 |         62        0.62       99.45
          5 |         55        0.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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