Frequencies for first 10,000 rows of rx5v1c3 variable in nhamcsed2013 dataset :

   For RX5, |
 level 1 of |
MULTUM drug |
category #3 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,946       99.46       99.46
        040 |          3        0.03       99.49
        057 |         48        0.48       99.97
        113 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016