Frequencies for first 10,000 rows of rx9v1c2 variable in nhamcsed2012 dataset :

   For RX9, |
 level 1 of |
MULTUM drug |
category #2 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,970       99.70       99.70
        001 |          3        0.03       99.73
        040 |          2        0.02       99.75
        057 |          7        0.07       99.82
        081 |          3        0.03       99.85
        087 |          1        0.01       99.86
        105 |          1        0.01       99.87
        115 |          2        0.02       99.89
        122 |         10        0.10       99.99
        358 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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