Frequencies for first 10,000 rows of rx5v1c2 variable in nhamcsed2008 dataset :

   for rx5, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,841       98.41       98.41
        001 |         18        0.18       98.59
        040 |         24        0.24       98.83
        057 |         52        0.52       99.35
        081 |          8        0.08       99.43
        105 |          2        0.02       99.45
        115 |          6        0.06       99.51
        122 |         40        0.40       99.91
        133 |          3        0.03       99.94
        242 |          4        0.04       99.98
        358 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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