Frequencies for first 10,000 rows of comstat1 variable in nhamcsed1995 dataset :

composition |
status code |
for drug #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,665       56.65       56.65
          2 |      1,036       10.36       67.01
          3 |        192        1.92       68.93
          . |      3,107       31.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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