Frequencies for first 10,000 rows of comstat6 variable in nhamcsed2000 dataset :

composition |
status code |
for drug #6 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        229        2.29        2.29
          2 |         24        0.24        2.53
          3 |         21        0.21        2.74
          . |      9,726       97.26      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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