Frequencies for first 10,000 rows of comstat6 variable in nhamcsopd2000 dataset :

composition |
status code |
        for |
 medication |
         #6 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        472        4.72        4.72
          2 |         56        0.56        5.28
          3 |         67        0.67        5.95
          . |      9,405       94.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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