Frequencies for first 10,000 rows of totther variable in namcs1998 dataset :

  total # of therapeutic/preventive |
                           services |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                                  0 |      6,228       62.28       62.28
                                  1 |      2,162       21.62       83.90
                                  2 |      1,003       10.03       93.93
                                  3 |        381        3.81       97.74
                                  4 |        108        1.08       98.82
                                  5 |         65        0.65       99.47
                                  6 |         24        0.24       99.71
                                  7 |          6        0.06       99.77
                                  8 |          2        0.02       99.79
                                  9 |          1        0.01       99.80
                                 10 |          1        0.01       99.81
All boxes blank, including None box |         19        0.19      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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