Frequencies for first 10,000 rows of comstat4 variable in nhamcsopd1997 dataset :

composition |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        938        9.38        9.38
          2 |         89        0.89       10.27
          3 |         29        0.29       10.56
          . |      8,944       89.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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