Frequencies for first 10,000 rows of rx9v1c2 variable in nhamcsed2013 dataset :

   For RX9, |
 level 1 of |
MULTUM drug |
category #2 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,975       99.75       99.75
        001 |          5        0.05       99.80
        040 |          6        0.06       99.86
        057 |          1        0.01       99.87
        081 |          2        0.02       99.89
        087 |          1        0.01       99.90
        105 |          1        0.01       99.91
        115 |          1        0.01       99.92
        122 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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