Frequencies for first 10,000 rows of comstat1 variable in nhamcsed2002 dataset :

composition |
status code |
for drug #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,231       62.31       62.31
          2 |        873        8.73       71.04
          3 |        195        1.95       72.99
          . |      2,701       27.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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