Frequencies for first 10,000 rows of comstat3 variable in nhamcsopd1995 dataset :

composition |
status code |
        for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,663       16.63       16.63
          2 |        199        1.99       18.62
          3 |         86        0.86       19.48
          . |      8,052       80.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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