Frequencies for first 10,000 rows of rx2v1c3 variable in namcs2012 dataset :

   For RX2, |
 level 1 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,933       99.33       99.33
        040 |         14        0.14       99.47
        057 |         41        0.41       99.88
        097 |          7        0.07       99.95
        105 |          3        0.03       99.98
        113 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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