Frequencies for first 10,000 rows of comstat6 variable in nhamcsopd2002 dataset :

composition |
status code |
        for |
 medication |
         #6 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        521        5.21        5.21
          2 |         36        0.36        5.57
          3 |         21        0.21        5.78
          . |      9,422       94.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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