Frequencies for first 10,000 rows of rx3cat3 variable in namcs2008 dataset :

   for rx3, |
multum drug |
category #3 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,952       99.52       99.52
        185 |          3        0.03       99.55
        197 |          9        0.09       99.64
        203 |         31        0.31       99.95
        204 |          1        0.01       99.96
        270 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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