Frequencies for first 10,000 rows of comstat4 variable in nhamcsed1997 dataset :

composition |
status code |
for drug #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        746        7.46        7.46
          2 |        110        1.10        8.56
          3 |         30        0.30        8.86
          . |      9,114       91.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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