Frequencies for first 10,000 rows of rx4v1c2 variable in namcs2012 dataset :

   For RX4, |
 level 1 of |
MULTUM drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,660       96.60       96.60
        001 |         19        0.19       96.79
        020 |          1        0.01       96.80
        040 |         63        0.63       97.43
        057 |         51        0.51       97.94
        081 |         79        0.79       98.73
        087 |          1        0.01       98.74
        097 |         27        0.27       99.01
        105 |         13        0.13       99.14
        115 |          6        0.06       99.20
        122 |         30        0.30       99.50
        133 |         12        0.12       99.62
        218 |         11        0.11       99.73
        242 |          7        0.07       99.80
        254 |          4        0.04       99.84
        358 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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