Frequencies for first 10,000 rows of rx2v1c2 variable in nhamcsed2007 dataset :

   for rx2, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,982       89.82       89.82
        001 |         98        0.98       90.80
        040 |         71        0.71       91.51
        057 |        416        4.16       95.67
        081 |         74        0.74       96.41
        097 |          7        0.07       96.48
        105 |         51        0.51       96.99
        115 |          7        0.07       97.06
        122 |        241        2.41       99.47
        133 |         23        0.23       99.70
        242 |         27        0.27       99.97
        331 |          1        0.01       99.98
        358 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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