Frequencies for first 10,000 rows of comstat1 variable in nhamcsed1999 dataset :

composition |
status code |
for drug #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,626       56.26       56.26
          2 |      1,007       10.07       66.33
          3 |        240        2.40       68.73
          . |      3,127       31.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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