Frequencies for first 10,000 rows of rx1v2c3 variable in nhamcsopd2010 dataset :

   for rx1, |
 level 2 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,870       98.70       98.70
        064 |         31        0.31       99.01
        065 |         28        0.28       99.29
        101 |         44        0.44       99.73
        265 |          1        0.01       99.74
        270 |         18        0.18       99.92
        430 |          3        0.03       99.95
        433 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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