Frequencies for first 10,000 rows of rx2v1c3 variable in namcs2010 dataset :

   for rx2, |
 level 1 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,925       99.25       99.25
        040 |          5        0.05       99.30
        057 |         61        0.61       99.91
        097 |          5        0.05       99.96
        105 |          3        0.03       99.99
        113 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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