Frequencies for first 10,000 rows of cmstata1 variable in nhamcsed2001 dataset :

composition |
status code |
for adverse |
    drug #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        295        2.95        2.95
          2 |          8        0.08        3.03
          3 |         43        0.43        3.46
          . |      9,654       96.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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