Frequencies for first 10,000 rows of comstat4 variable in nhamcsed1993 dataset :

composition |
status code |
for drug #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        638        6.38        6.38
          2 |         83        0.83        7.21
          3 |         41        0.41        7.62
          . |      9,238       92.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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