Frequencies for first 10,000 rows of rx3v2c3 variable in nhamcsopd2008 dataset :

   for rx3, |
 level 2 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,931       99.31       99.31
        064 |         30        0.30       99.61
        065 |         29        0.29       99.90
        101 |          3        0.03       99.93
        113 |          1        0.01       99.94
        270 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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