Frequencies for first 10,000 rows of rx4v2c3 variable in namcs2010 dataset :

   for rx4, |
 level 2 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,962       99.62       99.62
        064 |         19        0.19       99.81
        065 |         10        0.10       99.91
        101 |          1        0.01       99.92
        270 |          4        0.04       99.96
        433 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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