Frequencies for first 10,000 rows of rx4v1c1 variable in nhamcsed2009 dataset :

   for rx4, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,466       84.66       84.66
        001 |        239        2.39       87.05
        028 |          1        0.01       87.06
        040 |        101        1.01       88.07
        057 |        655        6.55       94.62
        081 |         26        0.26       94.88
        087 |         97        0.97       95.85
        097 |         54        0.54       96.39
        105 |         34        0.34       96.73
        113 |          2        0.02       96.75
        115 |         88        0.88       97.63
        122 |        134        1.34       98.97
        133 |         40        0.40       99.37
        218 |          2        0.02       99.39
        242 |         16        0.16       99.55
        254 |         12        0.12       99.67
        331 |          2        0.02       99.69
        358 |         24        0.24       99.93
        365 |          6        0.06       99.99
        899 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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