Frequencies for first 10,000 rows of rx7v1c1 variable in nhamcsopd2007 dataset :

   for rx7, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,858       88.58       88.58
        001 |         62        0.62       89.20
        020 |         14        0.14       89.34
        028 |          2        0.02       89.36
        040 |        193        1.93       91.29
        057 |        222        2.22       93.51
        081 |         24        0.24       93.75
        087 |         79        0.79       94.54
        097 |         31        0.31       94.85
        105 |         36        0.36       95.21
        115 |        121        1.21       96.42
        122 |         67        0.67       97.09
        133 |         47        0.47       97.56
        218 |         27        0.27       97.83
        242 |         66        0.66       98.49
        254 |         13        0.13       98.62
        331 |          1        0.01       98.63
        358 |        137        1.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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