Frequencies for first 10,000 rows of rx1v2c3 variable in nhamcsed2009 dataset :

   for rx1, |
 level 2 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,721       97.21       97.21
        064 |        145        1.45       98.66
        065 |        124        1.24       99.90
        101 |          3        0.03       99.93
        265 |          1        0.01       99.94
        270 |          1        0.01       99.95
        332 |          1        0.01       99.96
        430 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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