Frequencies for first 10,000 rows of rx5v1c3 variable in nhamcsopd2010 dataset :

   for rx5, |
 level 1 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,972       99.72       99.72
        040 |          3        0.03       99.75
        057 |         20        0.20       99.95
        105 |          4        0.04       99.99
        113 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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