Frequencies for first 10,000 rows of rx4v1c2 variable in namcs2008 dataset :

   for rx4, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,672       96.72       96.72
        001 |         12        0.12       96.84
        040 |         68        0.68       97.52
        057 |         44        0.44       97.96
        081 |         90        0.90       98.86
        097 |         31        0.31       99.17
        105 |         12        0.12       99.29
        115 |          9        0.09       99.38
        122 |         22        0.22       99.60
        133 |          7        0.07       99.67
        218 |          1        0.01       99.68
        242 |          3        0.03       99.71
        254 |          1        0.01       99.72
        358 |         28        0.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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