Frequencies for first 10,000 rows of comstat3 variable in nhamcsopd1998 dataset :

composition |
status code |
        for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,746       17.46       17.46
          2 |        219        2.19       19.65
          3 |         64        0.64       20.29
          . |      7,971       79.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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