Frequencies for first 10,000 rows of comstat1 variable in namcs1997 dataset :

composition |
status code |
        for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,135       81.35       81.35
          2 |      1,517       15.17       96.52
          3 |        346        3.46       99.98
          . |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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