Frequencies for first 10,000 rows of rx2v1c2 variable in namcs2008 dataset :

   for rx2, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,446       94.46       94.46
        001 |         44        0.44       94.90
        040 |         98        0.98       95.88
        057 |        124        1.24       97.12
        081 |         87        0.87       97.99
        087 |          1        0.01       98.00
        097 |         62        0.62       98.62
        105 |         28        0.28       98.90
        115 |         12        0.12       99.02
        122 |         48        0.48       99.50
        133 |         31        0.31       99.81
        218 |          3        0.03       99.84
        242 |          1        0.01       99.85
        254 |          1        0.01       99.86
        358 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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