Frequencies for first 10,000 rows of rx6v1c2 variable in nhamcsed2008 dataset :

   for rx6, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,900       99.00       99.00
        001 |          7        0.07       99.07
        040 |         20        0.20       99.27
        057 |         27        0.27       99.54
        081 |         11        0.11       99.65
        105 |          3        0.03       99.68
        115 |          2        0.02       99.70
        122 |         25        0.25       99.95
        133 |          2        0.02       99.97
        242 |          2        0.02       99.99
        358 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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