Frequencies for first 10,000 rows of rx4v1c1 variable in nhamcsed2007 dataset :

   for rx4, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,410       84.10       84.10
        001 |        226        2.26       86.36
        020 |          1        0.01       86.37
        040 |        116        1.16       87.53
        057 |        638        6.38       93.91
        081 |         26        0.26       94.17
        087 |        115        1.15       95.32
        097 |         64        0.64       95.96
        105 |         25        0.25       96.21
        115 |        107        1.07       97.28
        122 |        143        1.43       98.71
        133 |         33        0.33       99.04
        218 |          2        0.02       99.06
        242 |         33        0.33       99.39
        254 |         15        0.15       99.54
        331 |          4        0.04       99.58
        358 |         38        0.38       99.96
        365 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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