Frequencies for first 10,000 rows of rx7v2c2 variable in nhamcsed2008 dataset :

   for rx7, |
 level 2 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,939       99.39       99.39
        012 |          4        0.04       99.43
        015 |          3        0.03       99.46
        046 |          6        0.06       99.52
        053 |          7        0.07       99.59
        064 |          2        0.02       99.61
        065 |         15        0.15       99.76
        083 |          9        0.09       99.85
        117 |          1        0.01       99.86
        123 |          5        0.05       99.91
        125 |          1        0.01       99.92
        127 |          1        0.01       99.93
        129 |          4        0.04       99.97
        251 |          1        0.01       99.98
        320 |          1        0.01       99.99
        340 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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