Frequencies for first 10,000 rows of rx2v3c2 variable in nhamcsed2007 dataset :

   for rx2, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,416       94.16       94.16
        141 |          1        0.01       94.17
        143 |          1        0.01       94.18
        174 |          1        0.01       94.19
        180 |         13        0.13       94.32
        185 |          2        0.02       94.34
        196 |        246        2.46       96.80
        198 |        128        1.28       98.08
        201 |          1        0.01       98.09
        203 |         39        0.39       98.48
        209 |          1        0.01       98.49
        210 |         26        0.26       98.75
        211 |         74        0.74       99.49
        239 |         23        0.23       99.72
        268 |         15        0.15       99.87
        276 |          1        0.01       99.88
        292 |          5        0.05       99.93
        301 |          5        0.05       99.98
        351 |          1        0.01       99.99
        374 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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