Frequencies for first 10,000 rows of comstat5 variable in nhamcsopd1997 dataset :

composition |
status code |
        for |
 medication |
         #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        543        5.43        5.43
          2 |         53        0.53        5.96
          3 |         24        0.24        6.20
          . |      9,380       93.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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