Frequencies for first 10,000 rows of comstat1 variable in nhamcsopd2001 dataset :

composition |
status code |
        for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,567       45.67       45.67
          2 |        983        9.83       55.50
          3 |        294        2.94       58.44
          . |      4,156       41.56      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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