Frequencies for first 10,000 rows of rx7v3c2 variable in nhamcsed2008 dataset :

   for rx7, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,966       99.66       99.66
        180 |          1        0.01       99.67
        196 |          9        0.09       99.76
        198 |          6        0.06       99.82
        203 |          2        0.02       99.84
        210 |          1        0.01       99.85
        211 |          9        0.09       99.94
        385 |          4        0.04       99.98
        389 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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