Frequencies for first 10,000 rows of rx1v1c3 variable in namcs2011 dataset :

   For RX1, |
 level 1 of |
MULTUM drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,900       99.00       99.00
        040 |         21        0.21       99.21
        057 |         64        0.64       99.85
        097 |         10        0.10       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