Frequencies for first 10,000 rows of rx7v1c2 variable in namcs2012 dataset :

   For RX7, |
 level 1 of |
MULTUM drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,862       98.62       98.62
        001 |          9        0.09       98.71
        020 |          1        0.01       98.72
        040 |         22        0.22       98.94
        057 |         17        0.17       99.11
        081 |         29        0.29       99.40
        087 |          2        0.02       99.42
        097 |         12        0.12       99.54
        105 |         11        0.11       99.65
        115 |          6        0.06       99.71
        122 |         15        0.15       99.86
        133 |          1        0.01       99.87
        218 |          6        0.06       99.93
        254 |          2        0.02       99.95
        358 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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