Frequencies for first 10,000 rows of rx4v3c2 variable in nhamcsed2009 dataset :

   for rx4, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,820       98.20       98.20
        174 |          1        0.01       98.21
        180 |          9        0.09       98.30
        185 |          3        0.03       98.33
        196 |         41        0.41       98.74
        198 |         38        0.38       99.12
        201 |          1        0.01       99.13
        203 |         13        0.13       99.26
        210 |         11        0.11       99.37
        211 |         15        0.15       99.52
        239 |         11        0.11       99.63
        268 |          3        0.03       99.66
        292 |          3        0.03       99.69
        301 |          3        0.03       99.72
        351 |          1        0.01       99.73
        385 |         24        0.24       99.97
        388 |          2        0.02       99.99
        389 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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