Frequencies for first 10,000 rows of comstat5 variable in nhamcsed1999 dataset :

composition |
status code |
for drug #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        410        4.10        4.10
          2 |         47        0.47        4.57
          3 |         23        0.23        4.80
          . |      9,520       95.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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