Frequencies for first 10,000 rows of rx2v3c2 variable in namcs2007 dataset :

   for rx2, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,737       97.37       97.37
        102 |          7        0.07       97.44
        143 |          2        0.02       97.46
        174 |          7        0.07       97.53
        180 |          1        0.01       97.54
        185 |          2        0.02       97.56
        186 |          5        0.05       97.61
        196 |         24        0.24       97.85
        197 |          1        0.01       97.86
        198 |         39        0.39       98.25
        201 |          1        0.01       98.26
        203 |         28        0.28       98.54
        209 |          3        0.03       98.57
        210 |          1        0.01       98.58
        211 |         90        0.90       99.48
        238 |          2        0.02       99.50
        239 |          7        0.07       99.57
        268 |          6        0.06       99.63
        292 |          4        0.04       99.67
        301 |         26        0.26       99.93
        317 |          6        0.06       99.99
        374 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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