Frequencies for first 10,000 rows of rx27v1c2 variable in namcs2014 dataset :

  For RX27, |
 level 1 of |
MULTUM drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,997       99.97       99.97
        040 |          1        0.01       99.98
        081 |          1        0.01       99.99
        218 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017