Frequencies for first 10,000 rows of rx7v2c2 variable in nhamcsed2009 dataset :

   for rx7, |
 level 2 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,948       99.48       99.48
        012 |          2        0.02       99.50
        015 |          2        0.02       99.52
        046 |          3        0.03       99.55
        053 |          6        0.06       99.61
        054 |          1        0.01       99.62
        064 |          2        0.02       99.64
        065 |         15        0.15       99.79
        083 |          3        0.03       99.82
        117 |          2        0.02       99.84
        123 |          4        0.04       99.88
        129 |          8        0.08       99.96
        132 |          1        0.01       99.97
        151 |          1        0.01       99.98
        251 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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