Frequencies for first 10,000 rows of rx4v1c2 variable in nhamcsopd2008 dataset :

   for rx4, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,686       96.86       96.86
        001 |         20        0.20       97.06
        020 |          2        0.02       97.08
        040 |         53        0.53       97.61
        057 |         56        0.56       98.17
        081 |         83        0.83       99.00
        087 |          2        0.02       99.02
        097 |         16        0.16       99.18
        105 |         22        0.22       99.40
        115 |          6        0.06       99.46
        122 |         40        0.40       99.86
        133 |          3        0.03       99.89
        242 |          3        0.03       99.92
        254 |          1        0.01       99.93
        358 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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