Frequencies for first 10,000 rows of comstat6 variable in nhamcsed2002 dataset :

composition |
status code |
for drug #6 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        320        3.20        3.20
          2 |         35        0.35        3.55
          3 |         21        0.21        3.76
          . |      9,624       96.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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