Frequencies for first 10,000 rows of totserv variable in namcs2009 dataset :

      total |
diag/screen |
    /nonmed |
  treatment |
   services |
ordered/pro |
      vided |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        397        3.97        3.97
          1 |        524        5.24        9.21
          2 |      1,193       11.93       21.14
          3 |      1,779       17.79       38.93
          4 |      2,208       22.08       61.01
          5 |      1,446       14.46       75.47
          6 |        886        8.86       84.33
          7 |        578        5.78       90.11
          8 |        373        3.73       93.84
          9 |        266        2.66       96.50
         10 |        156        1.56       98.06
         11 |         80        0.80       98.86
         12 |         53        0.53       99.39
         13 |         29        0.29       99.68
         14 |         14        0.14       99.82
         15 |          9        0.09       99.91
         16 |          4        0.04       99.95
         17 |          4        0.04       99.99
         18 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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