Frequencies for first 10,000 rows of servcnt variable in namcs2012 dataset :

  Total number of |
 services ordered |
      or provided |
   incuding vital |
            signs |      Freq.     Percent        Cum.
------------------+-----------------------------------
                0 |        360        3.60        3.60
                1 |      1,210       12.10       15.70
                2 |        875        8.75       24.45
                3 |      1,324       13.24       37.69
                4 |      1,727       17.27       54.96
                5 |      1,707       17.07       72.03
                6 |        917        9.17       81.20
                7 |        619        6.19       87.39
                8 |        410        4.10       91.49
                9 |        241        2.41       93.90
               10 |        174        1.74       95.64
               11 |        122        1.22       96.86
               12 |         93        0.93       97.79
               13 |         66        0.66       98.45
               14 |         59        0.59       99.04
               15 |         35        0.35       99.39
               16 |         31        0.31       99.70
               17 |         15        0.15       99.85
               18 |          8        0.08       99.93
               19 |          5        0.05       99.98
               21 |          2        0.02      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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