Frequencies for first 10,000 rows of rx7v1c1 variable in nhamcsed2009 dataset :

   for rx7, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,733       97.33       97.33
        001 |         30        0.30       97.63
        040 |         32        0.32       97.95
        057 |         91        0.91       98.86
        081 |         11        0.11       98.97
        087 |         25        0.25       99.22
        097 |          8        0.08       99.30
        105 |          6        0.06       99.36
        113 |          2        0.02       99.38
        115 |         20        0.20       99.58
        122 |         17        0.17       99.75
        133 |          8        0.08       99.83
        242 |          4        0.04       99.87
        254 |          2        0.02       99.89
        331 |          1        0.01       99.90
        358 |          8        0.08       99.98
        365 |          1        0.01       99.99
        899 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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