Frequencies for first 10,000 rows of rx6v1c2 variable in nhamcsopd2008 dataset :

   for rx6, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,809       98.09       98.09
        001 |          8        0.08       98.17
        020 |          2        0.02       98.19
        040 |         45        0.45       98.64
        057 |         32        0.32       98.96
        081 |         44        0.44       99.40
        097 |          9        0.09       99.49
        105 |         11        0.11       99.60
        115 |          6        0.06       99.66
        122 |         20        0.20       99.86
        133 |          3        0.03       99.89
        218 |          1        0.01       99.90
        242 |          1        0.01       99.91
        358 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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