Frequencies for first 10,000 rows of comstat4 variable in nhamcsed2000 dataset :

composition |
status code |
for drug #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        789        7.89        7.89
          2 |        123        1.23        9.12
          3 |         48        0.48        9.60
          . |      9,040       90.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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