Frequencies for first 10,000 rows of comstat6 variable in nhamcsed1997 dataset :

composition |
status code |
for drug #6 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        188        1.88        1.88
          2 |         24        0.24        2.12
          3 |          5        0.05        2.17
          . |      9,783       97.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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