Frequencies for first 10,000 rows of rx4v3c2 variable in nhamcsopd2007 dataset :

   for rx4, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,821       98.21       98.21
        102 |          3        0.03       98.24
        174 |          1        0.01       98.25
        180 |          2        0.02       98.27
        185 |          2        0.02       98.29
        196 |          4        0.04       98.33
        198 |         30        0.30       98.63
        201 |          1        0.01       98.64
        203 |         21        0.21       98.85
        209 |          2        0.02       98.87
        211 |         94        0.94       99.81
        238 |          6        0.06       99.87
        239 |          1        0.01       99.88
        265 |          1        0.01       99.89
        268 |          1        0.01       99.90
        276 |          2        0.02       99.92
        292 |          1        0.01       99.93
        297 |          1        0.01       99.94
        301 |          4        0.04       99.98
        317 |          1        0.01       99.99
        351 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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