Frequencies for first 10,000 rows of comstat4 variable in namcs1999 dataset :

composition |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,006       10.06       10.06
          2 |         89        0.89       10.95
          3 |         33        0.33       11.28
          . |      8,872       88.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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