Frequencies for first 10,000 rows of rx7v1c2 variable in nhamcsopd2009 dataset :

   for rx7, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,838       98.38       98.38
        001 |         10        0.10       98.48
        020 |          1        0.01       98.49
        040 |         32        0.32       98.81
        057 |         22        0.22       99.03
        081 |         42        0.42       99.45
        087 |          1        0.01       99.46
        097 |          8        0.08       99.54
        105 |          8        0.08       99.62
        115 |          2        0.02       99.64
        122 |         16        0.16       99.80
        133 |          5        0.05       99.85
        242 |          6        0.06       99.91
        254 |          2        0.02       99.93
        358 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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