Frequencies for first 10,000 rows of rx7v1c2 variable in nhamcsed2011 dataset :

   For RX7, |
 level 1 of |
MULTUM drug |
category #2 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,955       99.55       99.55
        001 |          2        0.02       99.57
        040 |          9        0.09       99.66
        057 |         16        0.16       99.82
        081 |          4        0.04       99.86
        105 |          1        0.01       99.87
        113 |          1        0.01       99.88
        122 |         11        0.11       99.99
        242 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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