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

    Total number of diagnostic services |
                    ordered or provided |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
'None' box and all item fields are blan |         80        0.80        0.80
                                      0 |      3,018       30.18       30.98
                                      1 |      2,070       20.70       51.68
                                      2 |        868        8.68       60.36
                                      3 |        658        6.58       66.94
                                      4 |        581        5.81       72.75
                                      5 |        569        5.69       78.44
                                      6 |        468        4.68       83.12
                                      7 |        448        4.48       87.60
                                      8 |        358        3.58       91.18
                                      9 |        252        2.52       93.70
                                     10 |        185        1.85       95.55
                                     11 |        134        1.34       96.89
                                     12 |         69        0.69       97.58
                                     13 |         52        0.52       98.10
                                     14 |         43        0.43       98.53
                                     15 |         27        0.27       98.80
                                     16 |         25        0.25       99.05
                                     17 |         29        0.29       99.34
                                     18 |         28        0.28       99.62
                                     19 |         13        0.13       99.75
                                     20 |         16        0.16       99.91
                                     21 |          9        0.09      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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