Frequencies for first 10,000 rows of comstat3 variable in nhamcsopd1996 dataset :

composition |
status code |
        for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,939       19.39       19.39
          2 |        209        2.09       21.48
          3 |         86        0.86       22.34
          . |      7,766       77.66      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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