Frequencies for first 10,000 rows of comstat1 variable in nhamcsopd1992 dataset :

Composition |
status code |
        for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,683       36.83       36.83
          2 |        886        8.86       45.69
          3 |        445        4.45       50.14
          . |      4,986       49.86      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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