Frequencies for first 10,000 rows of rx3v1c2 variable in nhamcsed2008 dataset :

   for rx3, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,402       94.02       94.02
        001 |         56        0.56       94.58
        040 |         98        0.98       95.56
        057 |        196        1.96       97.52
        081 |         38        0.38       97.90
        097 |          8        0.08       97.98
        105 |          3        0.03       98.01
        115 |         14        0.14       98.15
        122 |        160        1.60       99.75
        133 |         11        0.11       99.86
        242 |         12        0.12       99.98
        358 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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