Frequencies for first 10,000 rows of rx8v1c2 variable in nhamcsopd2009 dataset :

   for rx8, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,869       98.69       98.69
        001 |          5        0.05       98.74
        040 |         18        0.18       98.92
        057 |         27        0.27       99.19
        081 |         39        0.39       99.58
        097 |          6        0.06       99.64
        105 |         12        0.12       99.76
        113 |          1        0.01       99.77
        115 |          4        0.04       99.81
        122 |         13        0.13       99.94
        242 |          1        0.01       99.95
        358 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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