Frequencies for first 10,000 rows of rx1v1c3 variable in namcs2006 dataset :

   for rx1, |
 level 1 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,958       99.58       99.58
        057 |         25        0.25       99.83
        097 |          9        0.09       99.92
        105 |          3        0.03       99.95
        122 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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