Frequencies for first 10,000 rows of rx8v1c2 variable in nhamcsopd2007 dataset :

   for rx8, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,914       99.14       99.14
        001 |          5        0.05       99.19
        040 |         10        0.10       99.29
        057 |         15        0.15       99.44
        081 |         23        0.23       99.67
        097 |          4        0.04       99.71
        105 |          8        0.08       99.79
        115 |          4        0.04       99.83
        122 |          8        0.08       99.91
        218 |          2        0.02       99.93
        242 |          4        0.04       99.97
        358 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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