Frequencies for first 10,000 rows of comstat4 variable in nhamcsed1996 dataset :

composition |
status code |
for drug #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        771        7.71        7.71
          2 |        100        1.00        8.71
          3 |         53        0.53        9.24
          . |      9,076       90.76      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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