Frequencies for first 10,000 rows of rx7v1c1 variable in namcs2012 dataset :

   For RX7, |
 level 1 of |
MULTUM drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,868       88.68       88.68
        001 |         34        0.34       89.02
        020 |         14        0.14       89.16
        040 |        179        1.79       90.95
        057 |        221        2.21       93.16
        081 |         22        0.22       93.38
        087 |         70        0.70       94.08
        097 |         46        0.46       94.54
        105 |         17        0.17       94.71
        113 |         13        0.13       94.84
        115 |        121        1.21       96.05
        122 |         54        0.54       96.59
        133 |         70        0.70       97.29
        218 |         48        0.48       97.77
        242 |         63        0.63       98.40
        254 |         12        0.12       98.52
        358 |        146        1.46       99.98
        365 |          1        0.01       99.99
        899 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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