Frequencies for first 10,000 rows of comstat6 variable in nhamcsed1995 dataset :

composition |
status code |
for drug #6 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        170        1.70        1.70
          2 |         11        0.11        1.81
          3 |          6        0.06        1.87
          . |      9,813       98.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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