Frequencies for first 10,000 rows of rx2v3c2 variable in nhamcsopd2009 dataset :

   for rx2, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,650       96.50       96.50
        102 |         11        0.11       96.61
        174 |          3        0.03       96.64
        180 |          5        0.05       96.69
        182 |          1        0.01       96.70
        185 |          4        0.04       96.74
        186 |          2        0.02       96.76
        196 |         12        0.12       96.88
        197 |          2        0.02       96.90
        198 |         40        0.40       97.30
        201 |          1        0.01       97.31
        203 |         39        0.39       97.70
        209 |          2        0.02       97.72
        211 |         81        0.81       98.53
        238 |          3        0.03       98.56
        239 |         13        0.13       98.69
        268 |          6        0.06       98.75
        276 |          1        0.01       98.76
        279 |          7        0.07       98.83
        292 |          5        0.05       98.88
        301 |         21        0.21       99.09
        317 |          1        0.01       99.10
        351 |          1        0.01       99.11
        385 |         40        0.40       99.51
        386 |          8        0.08       99.59
        388 |         20        0.20       99.79
        389 |         14        0.14       99.93
        395 |          3        0.03       99.96
        407 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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