Frequencies for first 10,000 rows of rx3cat3 variable in namcs2006 dataset :

   for rx3, |
multum drug |
category #3 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,981       99.81       99.81
        180 |          1        0.01       99.82
        185 |          4        0.04       99.86
        197 |         10        0.10       99.96
        204 |          1        0.01       99.97
        270 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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