Frequencies for first 10,000 rows of rx6v3c2 variable in nhamcsed2007 dataset :

   for rx6, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,968       99.68       99.68
        196 |          7        0.07       99.75
        198 |         11        0.11       99.86
        203 |          2        0.02       99.88
        210 |          1        0.01       99.89
        211 |          7        0.07       99.96
        239 |          1        0.01       99.97
        268 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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