Frequencies for first 10,000 rows of clinic variable in nhamcsopd2001 dataset :

   hospital |
clinic/emer |
      gency |
    service |
area marker |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,019       20.19       20.19
          2 |      1,659       16.59       36.78
          3 |      1,179       11.79       48.57
          4 |      1,028       10.28       58.85
          5 |        744        7.44       66.29
          6 |        578        5.78       72.07
          7 |        568        5.68       77.75
          8 |        552        5.52       83.27
          9 |        455        4.55       87.82
         10 |        376        3.76       91.58
         11 |        235        2.35       93.93
         12 |        222        2.22       96.15
         13 |        146        1.46       97.61
         14 |         86        0.86       98.47
         15 |        104        1.04       99.51
         16 |         49        0.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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