Frequencies for first 10,000 rows of comstat3 variable in nhamcsopd1993 dataset :

composition |
status code |
        for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,399       13.99       13.99
          2 |        149        1.49       15.48
          3 |        140        1.40       16.88
          . |      8,312       83.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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