Frequencies for first 10,000 rows of comstat4 variable in nhamcsed1999 dataset :

composition |
status code |
for drug #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        795        7.95        7.95
          2 |        119        1.19        9.14
          3 |         63        0.63        9.77
          . |      9,023       90.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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