Frequencies for first 10,000 rows of rx1v3c3 variable in namcs2006 dataset :

   for rx1, |
 level 3 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,961       99.61       99.61
        180 |          5        0.05       99.66
        185 |          9        0.09       99.75
        197 |         25        0.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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