Frequencies for first 10,000 rows of rx7v1c2 variable in nhamcsed2012 dataset :

   For RX7, |
 level 1 of |
MULTUM drug |
category #2 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,935       99.35       99.35
        001 |          7        0.07       99.42
        040 |          8        0.08       99.50
        057 |         19        0.19       99.69
        081 |          6        0.06       99.75
        087 |          1        0.01       99.76
        097 |          1        0.01       99.77
        105 |          3        0.03       99.80
        115 |          3        0.03       99.83
        122 |         16        0.16       99.99
        242 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016