Frequencies for first 10,000 rows of rx2v1c2 variable in nhamcsed2013 dataset :

   For RX2, |
 level 1 of |
MULTUM drug |
category #2 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,990       89.90       89.90
        001 |        102        1.02       90.92
        040 |        123        1.23       92.15
        057 |        215        2.15       94.30
        081 |         57        0.57       94.87
        087 |          2        0.02       94.89
        097 |          4        0.04       94.93
        105 |          4        0.04       94.97
        113 |          1        0.01       94.98
        115 |         16        0.16       95.14
        122 |        447        4.47       99.61
        133 |         28        0.28       99.89
        218 |          2        0.02       99.91
        242 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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