Frequencies for first 10,000 rows of comstat5 variable in nhamcsed1998 dataset :

composition |
status code |
for drug #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        334        3.34        3.34
          2 |         34        0.34        3.68
          3 |          8        0.08        3.76
          . |      9,624       96.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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