Frequencies for first 10,000 rows of comstat6 variable in nhamcsed1998 dataset :

composition |
status code |
for drug #6 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        177        1.77        1.77
          2 |         12        0.12        1.89
          3 |          5        0.05        1.94
          . |      9,806       98.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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