Frequencies for first 10,000 rows of totproc variable in nhamcsed2011 dataset :

    Total number of procedures provided |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
'None' box and all item fields are blan |        538        5.38        5.38
                                      0 |      4,982       49.82       55.20
                                      1 |      3,741       37.41       92.61
                                      2 |        570        5.70       98.31
                                      3 |        141        1.41       99.72
                                      4 |         19        0.19       99.91
                                      5 |          6        0.06       99.97
                                      6 |          3        0.03      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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