Frequencies for first 10,000 rows of comstat5 variable in nhamcsed2000 dataset :

composition |
status code |
for drug #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        423        4.23        4.23
          2 |         45        0.45        4.68
          3 |         25        0.25        4.93
          . |      9,507       95.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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