Frequencies for first 10,000 rows of totdiag variable in nhamcsed2006 dataset :

         total number of tests/services |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                      0 |      2,115       21.15       21.15
                                      1 |      2,713       27.13       48.28
                                      2 |      1,411       14.11       62.39
                                      3 |        751        7.51       69.90
                                      4 |        481        4.81       74.71
                                      5 |        400        4.00       78.71
                                      6 |        386        3.86       82.57
                                      7 |        362        3.62       86.19
                                      8 |        354        3.54       89.73
                                      9 |        321        3.21       92.94
                                     10 |        258        2.58       95.52
                                     11 |        140        1.40       96.92
                                     12 |         68        0.68       97.60
                                     13 |         35        0.35       97.95
                                     14 |         10        0.10       98.05
                                     15 |          1        0.01       98.06
                                     16 |          1        0.01       98.07
'none' box and all item fields are blan |        193        1.93      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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