Frequencies for first 10,000 rows of totdiag variable in nhamcsed2012 dataset :

    Total number of diagnostic services |
                    ordered or provided |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
'None' box and all item fields are blan |        571        5.71        5.71
                                      0 |      2,856       28.56       34.27
                                      1 |      2,064       20.64       54.91
                                      2 |        770        7.70       62.61
                                      3 |        594        5.94       68.55
                                      4 |        487        4.87       73.42
                                      5 |        486        4.86       78.28
                                      6 |        436        4.36       82.64
                                      7 |        415        4.15       86.79
                                      8 |        311        3.11       89.90
                                      9 |        288        2.88       92.78
                                     10 |        185        1.85       94.63
                                     11 |        158        1.58       96.21
                                     12 |        130        1.30       97.51
                                     13 |         80        0.80       98.31
                                     14 |         52        0.52       98.83
                                     15 |         43        0.43       99.26
                                     16 |         30        0.30       99.56
                                     17 |         19        0.19       99.75
                                     18 |         11        0.11       99.86
                                     19 |          8        0.08       99.94
                                     20 |          2        0.02       99.96
                                     21 |          1        0.01       99.97
                                     22 |          1        0.01       99.98
                                     23 |          2        0.02      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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