Frequencies for first 10,000 rows of servcnt variable in namcs2013 dataset :

  Total number of |
 services ordered |
      or provided |
  including vital |
            signs |      Freq.     Percent        Cum.
------------------+-----------------------------------
                0 |        226        2.26        2.26
                1 |        932        9.32       11.58
                2 |        707        7.07       18.65
                3 |      1,099       10.99       29.64
                4 |      1,560       15.60       45.24
                5 |      1,671       16.71       61.95
                6 |      1,176       11.76       73.71
                7 |        826        8.26       81.97
                8 |        576        5.76       87.73
                9 |        409        4.09       91.82
               10 |        252        2.52       94.34
               11 |        184        1.84       96.18
               12 |        121        1.21       97.39
               13 |         85        0.85       98.24
               14 |         43        0.43       98.67
               15 |         46        0.46       99.13
               16 |         27        0.27       99.40
               17 |         33        0.33       99.73
               18 |         10        0.10       99.83
               19 |          6        0.06       99.89
               20 |          6        0.06       99.95
               21 |          3        0.03       99.98
               22 |          1        0.01       99.99
               25 |          1        0.01      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017