Frequencies for first 10,000 rows of comstat4 variable in namcs1996 dataset :

composition |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,741       17.41       17.41
          2 |        207        2.07       19.48
          3 |         36        0.36       19.84
          . |      8,016       80.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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