Frequencies for first 10,000 rows of rx4v3c2 variable in namcs2007 dataset :

   for rx4, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,810       98.10       98.10
        102 |          3        0.03       98.13
        143 |          1        0.01       98.14
        174 |         10        0.10       98.24
        180 |          1        0.01       98.25
        182 |          1        0.01       98.26
        186 |          2        0.02       98.28
        196 |         10        0.10       98.38
        198 |         17        0.17       98.55
        203 |         20        0.20       98.75
        209 |          1        0.01       98.76
        210 |          1        0.01       98.77
        211 |         92        0.92       99.69
        238 |          2        0.02       99.71
        239 |          2        0.02       99.73
        268 |          2        0.02       99.75
        276 |          1        0.01       99.76
        292 |          2        0.02       99.78
        301 |         18        0.18       99.96
        317 |          2        0.02       99.98
        351 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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