Frequencies for first 10,000 rows of comstat6 variable in nhamcsed2001 dataset :

composition |
status code |
for drug #6 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        296        2.96        2.96
          2 |         20        0.20        3.16
          3 |         25        0.25        3.41
          . |      9,659       96.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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