Frequencies for first 10,000 rows of comstat1 variable in nhamcsopd1996 dataset :

composition |
status code |
        for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,715       47.15       47.15
          2 |      1,072       10.72       57.87
          3 |        280        2.80       60.67
          . |      3,933       39.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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