Frequencies for first 10,000 rows of totdiag variable in nhamcsed2000 dataset :

 total # of |
diagnostic/ |
  screening |
   services |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        782        7.82        7.82
          1 |      2,554       25.54       33.36
          2 |      2,411       24.11       57.47
          3 |      1,358       13.58       71.05
          4 |        914        9.14       80.19
          5 |        658        6.58       86.77
          6 |        472        4.72       91.49
          7 |        331        3.31       94.80
          8 |        180        1.80       96.60
          9 |        106        1.06       97.66
         10 |         38        0.38       98.04
         11 |         11        0.11       98.15
         12 |          4        0.04       98.19
         13 |          1        0.01       98.20
         16 |          1        0.01       98.21
         99 |        179        1.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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