Frequencies for first 10,000 rows of rx2cat3 variable in namcs2010 dataset :

   for rx2, |
multum drug |
category #3 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,925       99.25       99.25
        185 |          5        0.05       99.30
        197 |         29        0.29       99.59
        203 |         31        0.31       99.90
        204 |          1        0.01       99.91
        265 |          1        0.01       99.92
        270 |          3        0.03       99.95
        433 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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