Frequencies for first 10,000 rows of rx4v3c2 variable in nhamcsopd2008 dataset :

   for rx4, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,800       98.00       98.00
        102 |          3        0.03       98.03
        174 |          3        0.03       98.06
        180 |          2        0.02       98.08
        185 |          1        0.01       98.09
        196 |          5        0.05       98.14
        198 |         26        0.26       98.40
        201 |          2        0.02       98.42
        203 |         22        0.22       98.64
        209 |          1        0.01       98.65
        210 |          2        0.02       98.67
        211 |         83        0.83       99.50
        238 |          1        0.01       99.51
        239 |          4        0.04       99.55
        268 |          1        0.01       99.56
        276 |          1        0.01       99.57
        292 |          1        0.01       99.58
        301 |         10        0.10       99.68
        385 |         13        0.13       99.81
        386 |          3        0.03       99.84
        387 |          1        0.01       99.85
        388 |          7        0.07       99.92
        389 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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