Frequencies for first 10,000 rows of rx8v1c2 variable in namcs2007 dataset :

   for rx8, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,924       99.24       99.24
        001 |          3        0.03       99.27
        040 |         11        0.11       99.38
        057 |          6        0.06       99.44
        081 |         26        0.26       99.70
        097 |          2        0.02       99.72
        105 |          6        0.06       99.78
        115 |          8        0.08       99.86
        133 |          2        0.02       99.88
        218 |          2        0.02       99.90
        242 |          2        0.02       99.92
        358 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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