Frequencies for first 10,000 rows of totdiag variable in nhamcsed1998 dataset :

 total # of |
diagnostic/ |
  screening |
   services |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,134       11.34       11.34
          1 |      2,666       26.66       38.00
          2 |      2,209       22.09       60.09
          3 |      1,269       12.69       72.78
          4 |        896        8.96       81.74
          5 |        597        5.97       87.71
          6 |        430        4.30       92.01
          7 |        327        3.27       95.28
          8 |        242        2.42       97.70
          9 |        132        1.32       99.02
         10 |         63        0.63       99.65
         11 |         17        0.17       99.82
         12 |         10        0.10       99.92
         13 |          3        0.03       99.95
         99 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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