Frequencies for first 10,000 rows of totserv variable in nhamcsopd2009 dataset :

            total |
screening/diagnos |
tic/non-medicatio |
      n treatment |
         services |
 ordered/provided |
               at |      Freq.     Percent        Cum.
------------------+-----------------------------------
                0 |        470        4.70        4.70
                1 |      1,397       13.97       18.67
                2 |      1,196       11.96       30.63
                3 |      1,550       15.50       46.13
                4 |      1,707       17.07       63.20
                5 |      1,342       13.42       76.62
                6 |        922        9.22       85.84
                7 |        594        5.94       91.78
                8 |        362        3.62       95.40
                9 |        236        2.36       97.76
               10 |        108        1.08       98.84
               11 |         54        0.54       99.38
               12 |         35        0.35       99.73
               13 |         15        0.15       99.88
               14 |          6        0.06       99.94
               15 |          4        0.04       99.98
               16 |          1        0.01       99.99
               17 |          1        0.01      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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