Frequencies for first 10,000 rows of rx6v3c2 variable in nhamcsopd2007 dataset :

   for rx6, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,894       98.94       98.94
        174 |          4        0.04       98.98
        180 |          1        0.01       98.99
        185 |          1        0.01       99.00
        196 |          1        0.01       99.01
        198 |         18        0.18       99.19
        201 |          1        0.01       99.20
        203 |          9        0.09       99.29
        209 |          1        0.01       99.30
        210 |          1        0.01       99.31
        211 |         58        0.58       99.89
        238 |          3        0.03       99.92
        239 |          2        0.02       99.94
        292 |          3        0.03       99.97
        301 |          2        0.02       99.99
        351 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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