Frequencies for first 10,000 rows of rx5v1c2 variable in namcs2008 dataset :

   for rx5, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,741       97.41       97.41
        001 |          9        0.09       97.50
        040 |         46        0.46       97.96
        057 |         36        0.36       98.32
        081 |         82        0.82       99.14
        087 |          2        0.02       99.16
        097 |         25        0.25       99.41
        105 |          8        0.08       99.49
        115 |         13        0.13       99.62
        122 |         12        0.12       99.74
        133 |          5        0.05       99.79
        242 |          5        0.05       99.84
        358 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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