Frequencies for first 10,000 rows of totther variable in namcs2000 dataset :

  total # of therapeutic/preventive |
                           services |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                                  0 |      6,458       64.58       64.58
                                  1 |      1,534       15.34       79.92
                                  2 |      1,046       10.46       90.38
                                  3 |        403        4.03       94.41
                                  4 |        157        1.57       95.98
                                  5 |         65        0.65       96.63
                                  6 |         27        0.27       96.90
                                  7 |         12        0.12       97.02
                                  8 |          5        0.05       97.07
                                  9 |          1        0.01       97.08
                                 10 |          3        0.03       97.11
All boxes blank, including None box |        289        2.89      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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