Frequencies for first 10,000 rows of rx1v3c2 variable in nhamcsed2008 dataset :

   for rx1, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,275       92.75       92.75
        143 |          1        0.01       92.76
        180 |         20        0.20       92.96
        185 |          1        0.01       92.97
        196 |        142        1.42       94.39
        198 |        187        1.87       96.26
        201 |          4        0.04       96.30
        203 |         31        0.31       96.61
        210 |         21        0.21       96.82
        211 |        143        1.43       98.25
        239 |         20        0.20       98.45
        268 |         16        0.16       98.61
        276 |          4        0.04       98.65
        290 |          1        0.01       98.66
        292 |          5        0.05       98.71
        297 |          1        0.01       98.72
        301 |          3        0.03       98.75
        385 |        100        1.00       99.75
        388 |         16        0.16       99.91
        389 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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