Frequencies for first 10,000 rows of rx2v3c3 variable in namcs2007 dataset :

   for rx2, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,941       99.41       99.41
        185 |          7        0.07       99.48
        197 |         20        0.20       99.68
        203 |         30        0.30       99.98
        204 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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