Frequencies for first 10,000 rows of rx4v3c2 variable in nhamcsed2012 dataset :

   For RX4, |
 level 3 of |
MULTUM drug |
category #2 |
  (detailed |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,870       98.70       98.70
        180 |          7        0.07       98.77
        196 |         18        0.18       98.95
        198 |         32        0.32       99.27
        201 |          1        0.01       99.28
        203 |         10        0.10       99.38
        209 |          1        0.01       99.39
        210 |          2        0.02       99.41
        211 |         24        0.24       99.65
        239 |          3        0.03       99.68
        292 |          4        0.04       99.72
        297 |          1        0.01       99.73
        385 |         18        0.18       99.91
        386 |          2        0.02       99.93
        388 |          3        0.03       99.96
        389 |          2        0.02       99.98
        407 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016