Frequencies for first 10,000 rows of rx5v1c2 variable in nhamcsopd2009 dataset :

   for rx5, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,707       97.07       97.07
        001 |         19        0.19       97.26
        020 |          1        0.01       97.27
        040 |         61        0.61       97.88
        057 |         43        0.43       98.31
        081 |         68        0.68       98.99
        087 |          1        0.01       99.00
        097 |         14        0.14       99.14
        105 |         17        0.17       99.31
        113 |          1        0.01       99.32
        115 |         12        0.12       99.44
        122 |         20        0.20       99.64
        133 |         13        0.13       99.77
        218 |          5        0.05       99.82
        242 |          5        0.05       99.87
        254 |          2        0.02       99.89
        331 |          1        0.01       99.90
        358 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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