Frequencies for first 10,000 rows of rx4v2c3 variable in namcs2012 dataset :

   For RX4, |
 level 2 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,961       99.61       99.61
        064 |         19        0.19       99.80
        065 |          8        0.08       99.88
        101 |          3        0.03       99.91
        265 |          2        0.02       99.93
        270 |          2        0.02       99.95
        433 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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