Frequencies for first 10,000 rows of rx7v1c3 variable in namcs2012 dataset :

   For RX7, |
 level 1 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,979       99.79       99.79
        040 |          1        0.01       99.80
        057 |         14        0.14       99.94
        097 |          1        0.01       99.95
        105 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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