Frequencies for first 10,000 rows of rx2v3c2 variable in nhamcsopd2007 dataset :

   for rx2, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,711       97.11       97.11
        102 |          5        0.05       97.16
        174 |          2        0.02       97.18
        180 |          2        0.02       97.20
        185 |          4        0.04       97.24
        186 |          3        0.03       97.27
        196 |         20        0.20       97.47
        197 |          1        0.01       97.48
        198 |         38        0.38       97.86
        201 |          6        0.06       97.92
        203 |         37        0.37       98.29
        209 |          3        0.03       98.32
        210 |          1        0.01       98.33
        211 |        107        1.07       99.40
        238 |          7        0.07       99.47
        239 |         16        0.16       99.63
        263 |          1        0.01       99.64
        268 |          2        0.02       99.66
        276 |          6        0.06       99.72
        292 |          5        0.05       99.77
        301 |         21        0.21       99.98
        317 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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