Frequencies for first 10,000 rows of rx6cat3 variable in nhamcsopd2007 dataset :

   for rx6, |
multum drug |
category #3 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,986       99.86       99.86
        197 |          4        0.04       99.90
        203 |          7        0.07       99.97
        220 |          1        0.01       99.98
        265 |          1        0.01       99.99
        270 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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