Frequencies for first 10,000 rows of rx9v1c1 variable in namcs2012 dataset :

   For RX9, |
 level 1 of |
MULTUM drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,289       92.89       92.89
        001 |         12        0.12       93.01
        020 |          9        0.09       93.10
        028 |          2        0.02       93.12
        040 |         93        0.93       94.05
        057 |        130        1.30       95.35
        081 |         16        0.16       95.51
        087 |         67        0.67       96.18
        097 |         37        0.37       96.55
        105 |         22        0.22       96.77
        113 |          7        0.07       96.84
        115 |        106        1.06       97.90
        122 |         37        0.37       98.27
        133 |         36        0.36       98.63
        218 |         25        0.25       98.88
        242 |         32        0.32       99.20
        254 |          4        0.04       99.24
        358 |         76        0.76      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016