Frequencies for first 10,000 rows of rx3v1c2 variable in nhamcsed2007 dataset :

   for rx3, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,438       94.38       94.38
        001 |         59        0.59       94.97
        040 |         55        0.55       95.52
        057 |        162        1.62       97.14
        081 |         29        0.29       97.43
        087 |          1        0.01       97.44
        097 |          6        0.06       97.50
        105 |         40        0.40       97.90
        115 |         10        0.10       98.00
        122 |        162        1.62       99.62
        133 |         18        0.18       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