Frequencies for first 10,000 rows of totdiag variable in nhamcsed2004 dataset :

    total number of diagnostic services |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                      0 |        889        8.89        8.89
                                      1 |      2,330       23.30       32.19
                                      2 |      1,834       18.34       50.53
                                      3 |      1,157       11.57       62.10
                                      4 |        714        7.14       69.24
                                      5 |        442        4.42       73.66
                                      6 |        354        3.54       77.20
                                      7 |        317        3.17       80.37
                                      8 |        320        3.20       83.57
                                      9 |        344        3.44       87.01
                                     10 |        307        3.07       90.08
                                     11 |        299        2.99       93.07
                                     12 |        230        2.30       95.37
                                     13 |        172        1.72       97.09
                                     14 |         73        0.73       97.82
                                     15 |         27        0.27       98.09
                                     16 |         22        0.22       98.31
                                     17 |          4        0.04       98.35
                                     18 |          1        0.01       98.36
'none' box and all item fields are blan |        164        1.64      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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