Frequencies for first 10,000 rows of rx8v1c2 variable in nhamcsed2009 dataset :

   for rx8, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,970       99.70       99.70
        001 |          2        0.02       99.72
        040 |          3        0.03       99.75
        057 |          9        0.09       99.84
        081 |          4        0.04       99.88
        097 |          1        0.01       99.89
        113 |          1        0.01       99.90
        115 |          2        0.02       99.92
        122 |          7        0.07       99.99
        242 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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