Frequencies for first 10,000 rows of rx4v2c2 variable in nhamcsed2009 dataset :

   for rx4, |
 level 2 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,666       96.66       96.66
        005 |         11        0.11       96.77
        012 |         15        0.15       96.92
        015 |         24        0.24       97.16
        019 |          1        0.01       97.17
        046 |         27        0.27       97.44
        053 |         19        0.19       97.63
        064 |         15        0.15       97.78
        065 |         79        0.79       98.57
        083 |         15        0.15       98.72
        098 |          3        0.03       98.75
        101 |          3        0.03       98.78
        106 |          2        0.02       98.80
        117 |          7        0.07       98.87
        123 |         36        0.36       99.23
        124 |          1        0.01       99.24
        125 |          9        0.09       99.33
        129 |         47        0.47       99.80
        132 |          1        0.01       99.81
        136 |          3        0.03       99.84
        146 |          1        0.01       99.85
        151 |          3        0.03       99.88
        251 |         11        0.11       99.99
        340 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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