Frequencies for first 10,000 rows of rx1v1c3 variable in nhamcsopd2007 dataset :

   for rx1, |
 level 1 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,907       99.07       99.07
        057 |         46        0.46       99.53
        097 |         41        0.41       99.94
        105 |          5        0.05       99.99
        115 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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