Frequencies for first 10,000 rows of cmstata2 variable in nhamcsed2001 dataset :

composition |
status code |
for adverse |
    drug #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         48        0.48        0.48
          2 |          3        0.03        0.51
          3 |         10        0.10        0.61
          . |      9,939       99.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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