Frequencies for first 10,000 rows of rx4v1c2 variable in nhamcsopd2010 dataset :

   for rx4, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,639       96.39       96.39
        001 |         27        0.27       96.66
        040 |         85        0.85       97.51
        057 |         55        0.55       98.06
        081 |         83        0.83       98.89
        097 |         18        0.18       99.07
        105 |         18        0.18       99.25
        113 |          1        0.01       99.26
        115 |          7        0.07       99.33
        122 |         37        0.37       99.70
        133 |          6        0.06       99.76
        218 |         10        0.10       99.86
        242 |          2        0.02       99.88
        254 |          3        0.03       99.91
        358 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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