Frequencies for first 10,000 rows of rx2v3c2 variable in namcs2009 dataset :

   for rx2, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,612       96.12       96.12
        102 |          4        0.04       96.16
        174 |         12        0.12       96.28
        180 |          1        0.01       96.29
        185 |          1        0.01       96.30
        186 |          4        0.04       96.34
        196 |         21        0.21       96.55
        197 |          2        0.02       96.57
        198 |         44        0.44       97.01
        203 |         41        0.41       97.42
        210 |          1        0.01       97.43
        211 |        132        1.32       98.75
        238 |          1        0.01       98.76
        239 |          8        0.08       98.84
        268 |          8        0.08       98.92
        276 |          2        0.02       98.94
        290 |          1        0.01       98.95
        292 |          8        0.08       99.03
        301 |         12        0.12       99.15
        317 |          3        0.03       99.18
        351 |          1        0.01       99.19
        385 |         16        0.16       99.35
        386 |         14        0.14       99.49
        388 |         34        0.34       99.83
        389 |         15        0.15       99.98
        395 |          1        0.01       99.99
        407 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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