Frequencies for first 10,000 rows of rx3v2c3 variable in nhamcsopd2007 dataset :

   for rx3, |
 level 2 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,956       99.56       99.56
        064 |         18        0.18       99.74
        065 |         20        0.20       99.94
        101 |          3        0.03       99.97
        113 |          1        0.01       99.98
        220 |          1        0.01       99.99
        270 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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