Frequencies for first 10,000 rows of rx2v3c3 variable in nhamcsopd2008 dataset :

   for rx2, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,921       99.21       99.21
        185 |          7        0.07       99.28
        197 |         33        0.33       99.61
        203 |         38        0.38       99.99
        265 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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