Frequencies for first 10,000 rows of rx6v1c2 variable in namcs2009 dataset :

   for rx6, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,793       97.93       97.93
        001 |         12        0.12       98.05
        040 |         47        0.47       98.52
        057 |         23        0.23       98.75
        081 |         61        0.61       99.36
        097 |         14        0.14       99.50
        105 |          7        0.07       99.57
        115 |          9        0.09       99.66
        122 |         11        0.11       99.77
        218 |          1        0.01       99.78
        242 |          4        0.04       99.82
        358 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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