Frequencies for first 10,000 rows of rx9v3c2 variable in namcs2012 dataset :

   For RX9, |
 level 3 of |
MULTUM drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,928       99.28       99.28
        174 |          3        0.03       99.31
        180 |          1        0.01       99.32
        186 |          1        0.01       99.33
        196 |          3        0.03       99.36
        198 |          5        0.05       99.41
        203 |          3        0.03       99.44
        211 |         34        0.34       99.78
        238 |          3        0.03       99.81
        239 |          1        0.01       99.82
        292 |          1        0.01       99.83
        374 |          1        0.01       99.84
        385 |          5        0.05       99.89
        387 |          1        0.01       99.90
        388 |          4        0.04       99.94
        389 |          3        0.03       99.97
        442 |          2        0.02       99.99
        461 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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