Frequencies for first 10,000 rows of comstat1 variable in nhamcsed1993 dataset :

composition |
status code |
for drug #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,703       57.03       57.03
          2 |      1,006       10.06       67.09
          3 |        379        3.79       70.88
          . |      2,912       29.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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