Frequencies for first 10,000 rows of totdiag variable in nhamcsopd2006 dataset :

            total |
   diag/screening |
 services ordered |
      or provided |      Freq.     Percent        Cum.
------------------+-----------------------------------
                0 |      1,338       13.38       13.38
                1 |        777        7.77       21.15
                2 |      1,204       12.04       33.19
                3 |      1,696       16.96       50.15
                4 |      1,753       17.53       67.68
                5 |      1,082       10.82       78.50
                6 |        756        7.56       86.06
                7 |        480        4.80       90.86
                8 |        289        2.89       93.75
                9 |        178        1.78       95.53
               10 |        136        1.36       96.89
               11 |         53        0.53       97.42
               12 |         32        0.32       97.74
               13 |         19        0.19       97.93
               14 |         16        0.16       98.09
               15 |          7        0.07       98.16
               16 |          4        0.04       98.20
               17 |          4        0.04       98.24
               18 |          1        0.01       98.25
               19 |          1        0.01       98.26
Entire item blank |        174        1.74      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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