Frequencies for first 10,000 rows of comstat4 variable in namcs1995 dataset :

composition |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,062       10.62       10.62
          2 |        132        1.32       11.94
          3 |         43        0.43       12.37
          . |      8,763       87.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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