Frequencies for first 10,000 rows of rx7v3c2 variable in namcs2012 dataset :

   For RX7, |
 level 3 of |
MULTUM drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,924       99.24       99.24
        102 |          1        0.01       99.25
        180 |          1        0.01       99.26
        182 |          2        0.02       99.28
        185 |          1        0.01       99.29
        196 |          2        0.02       99.31
        198 |          6        0.06       99.37
        203 |          9        0.09       99.46
        211 |         29        0.29       99.75
        238 |          3        0.03       99.78
        239 |          2        0.02       99.80
        385 |          6        0.06       99.86
        386 |          3        0.03       99.89
        388 |          2        0.02       99.91
        389 |          6        0.06       99.97
        442 |          1        0.01       99.98
        444 |          1        0.01       99.99
        461 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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