Frequencies for first 10,000 rows of rx5v1c2 variable in namcs2009 dataset :

   for rx5, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,705       97.05       97.05
        001 |         13        0.13       97.18
        040 |         54        0.54       97.72
        057 |         44        0.44       98.16
        081 |        107        1.07       99.23
        097 |         17        0.17       99.40
        105 |         13        0.13       99.53
        115 |          5        0.05       99.58
        122 |         13        0.13       99.71
        133 |          6        0.06       99.77
        218 |          1        0.01       99.78
        242 |          2        0.02       99.80
        358 |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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