Frequencies for first 10,000 rows of comstat3 variable in nhamcsed1992 dataset :

Composition |
status code |
for drug #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        967        9.67        9.67
          2 |        155        1.55       11.22
          3 |         78        0.78       12.00
          . |      8,800       88.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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