Frequencies for first 10,000 rows of rx28v1c1 variable in nhamcsed2015 dataset 

  For RX28, |
 level 1 of |
MULTUM drug |
category #1 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,995       99.95       99.95
        040 |          3        0.03       99.98
        081 |          1        0.01       99.99
        115 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017