Frequencies for first 10,000 rows of rx2v1c2 variable in namcs2011 dataset :

   For RX2, |
 level 1 of |
MULTUM drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,423       94.23       94.23
        001 |         53        0.53       94.76
        040 |         86        0.86       95.62
        057 |        121        1.21       96.83
        081 |        102        1.02       97.85
        087 |          1        0.01       97.86
        097 |         35        0.35       98.21
        105 |         23        0.23       98.44
        115 |          8        0.08       98.52
        122 |         82        0.82       99.34
        133 |         20        0.20       99.54
        218 |          4        0.04       99.58
        242 |          5        0.05       99.63
        254 |          4        0.04       99.67
        358 |         33        0.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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