Frequencies for first 10,000 rows of comstat1 variable in nhamcsed1992 dataset :

Composition |
status code |
for drug #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,217       52.17       52.17
          2 |        847        8.47       60.64
          3 |        307        3.07       63.71
          . |      3,629       36.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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