Frequencies for first 10,000 rows of rx7v2c3 variable in namcs2012 dataset :

   For RX7, |
 level 2 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,979       99.79       99.79
        064 |          6        0.06       99.85
        065 |          8        0.08       99.93
        101 |          1        0.01       99.94
        270 |          5        0.05       99.99
        433 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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