Frequencies for first 10,000 rows of cmstata2 variable in nhamcsed2002 dataset :

composition |
status code |
for adverse |
    drug #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         58        0.58        0.58
          2 |          4        0.04        0.62
          3 |          8        0.08        0.70
          . |      9,930       99.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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