Frequencies for first 10,000 rows of rx7v3c2 variable in nhamcsed2009 dataset :

   for rx7, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,974       99.74       99.74
        196 |          5        0.05       99.79
        198 |         10        0.10       99.89
        203 |          2        0.02       99.91
        210 |          2        0.02       99.93
        211 |          3        0.03       99.96
        268 |          1        0.01       99.97
        385 |          1        0.01       99.98
        388 |          1        0.01       99.99
        389 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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