Frequencies for first 10,000 rows of rx8v1c2 variable in nhamcsed2007 dataset :

   for rx8, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,984       99.84       99.84
        001 |          3        0.03       99.87
        057 |          4        0.04       99.91
        081 |          1        0.01       99.92
        105 |          1        0.01       99.93
        115 |          3        0.03       99.96
        122 |          2        0.02       99.98
        133 |          1        0.01       99.99
        242 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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