Frequencies for first 10,000 rows of rx7v1c1 variable in nhamcsopd2008 dataset :

   for rx7, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,779       87.79       87.79
        001 |         37        0.37       88.16
        020 |         13        0.13       88.29
        028 |          4        0.04       88.33
        040 |        226        2.26       90.59
        057 |        234        2.34       92.93
        081 |         25        0.25       93.18
        087 |         93        0.93       94.11
        097 |         49        0.49       94.60
        105 |         37        0.37       94.97
        115 |        111        1.11       96.08
        122 |         81        0.81       96.89
        133 |         45        0.45       97.34
        218 |         16        0.16       97.50
        242 |         67        0.67       98.17
        254 |         25        0.25       98.42
        331 |          1        0.01       98.43
        358 |        148        1.48       99.91
        365 |          8        0.08       99.99
        899 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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