Frequencies for first 10,000 rows of rx9v1c2 variable in namcs2012 dataset :

   For RX9, |
 level 1 of |
MULTUM drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,888       98.88       98.88
        001 |          4        0.04       98.92
        040 |         18        0.18       99.10
        057 |         12        0.12       99.22
        081 |         34        0.34       99.56
        097 |          7        0.07       99.63
        105 |          4        0.04       99.67
        115 |          9        0.09       99.76
        122 |         10        0.10       99.86
        133 |          2        0.02       99.88
        218 |          3        0.03       99.91
        254 |          2        0.02       99.93
        331 |          1        0.01       99.94
        358 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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