Frequencies for first 10,000 rows of rx6v1c2 variable in nhamcsopd2009 dataset :

   for rx6, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,755       97.55       97.55
        001 |         10        0.10       97.65
        040 |         40        0.40       98.05
        057 |         43        0.43       98.48
        081 |         65        0.65       99.13
        087 |          2        0.02       99.15
        097 |         13        0.13       99.28
        105 |         16        0.16       99.44
        115 |         14        0.14       99.58
        122 |         18        0.18       99.76
        133 |          4        0.04       99.80
        242 |          9        0.09       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