Frequencies for first 10,000 rows of comstat1 variable in nhamcsed1997 dataset :

composition |
status code |
for drug #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,935       59.35       59.35
          2 |        982        9.82       69.17
          3 |        184        1.84       71.01
          . |      2,899       28.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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