Frequencies for first 10,000 rows of rx7v3c2 variable in namcs2006 dataset :

   for rx7, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,936       99.36       99.36
        174 |          4        0.04       99.40
        196 |          2        0.02       99.42
        198 |          2        0.02       99.44
        203 |         13        0.13       99.57
        209 |          1        0.01       99.58
        211 |         35        0.35       99.93
        236 |          1        0.01       99.94
        239 |          1        0.01       99.95
        268 |          2        0.02       99.97
        301 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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