Frequencies for first 10,000 rows of rx3v1c2 variable in nhamcsed2009 dataset :

   for rx3, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,501       95.01       95.01
        001 |         42        0.42       95.43
        040 |         85        0.85       96.28
        057 |        149        1.49       97.77
        081 |         18        0.18       97.95
        087 |          1        0.01       97.96
        097 |          5        0.05       98.01
        105 |          6        0.06       98.07
        115 |          9        0.09       98.16
        122 |        150        1.50       99.66
        133 |         14        0.14       99.80
        242 |         19        0.19       99.99
        358 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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