Frequencies for first 10,000 rows of rx3v1c2 variable in nhamcsopd2008 dataset :

   for rx3, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,542       95.42       95.42
        001 |         34        0.34       95.76
        040 |         90        0.90       96.66
        057 |         76        0.76       97.42
        081 |        110        1.10       98.52
        087 |          1        0.01       98.53
        097 |         26        0.26       98.79
        105 |         24        0.24       99.03
        115 |         10        0.10       99.13
        122 |         59        0.59       99.72
        133 |         12        0.12       99.84
        242 |          4        0.04       99.88
        358 |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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