Frequencies for first 10,000 rows of rx6v1c2 variable in namcs2011 dataset :

   For RX6, |
 level 1 of |
MULTUM drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,790       97.90       97.90
        001 |          6        0.06       97.96
        040 |         57        0.57       98.53
        057 |         28        0.28       98.81
        081 |         61        0.61       99.42
        097 |          7        0.07       99.49
        105 |         11        0.11       99.60
        115 |          7        0.07       99.67
        122 |          9        0.09       99.76
        133 |          7        0.07       99.83
        218 |          1        0.01       99.84
        358 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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