Frequencies for first 10,000 rows of totproc variable in nhamcsed2013 dataset :

    Total number of procedures provided |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
'None' box and all item fields are blan |        164        1.64        1.64
                                      0 |      5,536       55.36       57.00
                                      1 |      3,561       35.61       92.61
                                      2 |        636        6.36       98.97
                                      3 |         90        0.90       99.87
                                      4 |         11        0.11       99.98
                                      5 |          1        0.01       99.99
                                      6 |          1        0.01      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016