Frequencies for first 10,000 rows of rx7v1c2 variable in namcs2011 dataset :

   For RX7, |
 level 1 of |
MULTUM drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,843       98.43       98.43
        001 |          4        0.04       98.47
        040 |         33        0.33       98.80
        057 |         22        0.22       99.02
        081 |         53        0.53       99.55
        097 |          3        0.03       99.58
        105 |          3        0.03       99.61
        115 |          5        0.05       99.66
        122 |         17        0.17       99.83
        133 |          2        0.02       99.85
        218 |          1        0.01       99.86
        242 |          2        0.02       99.88
        254 |          2        0.02       99.90
        331 |          1        0.01       99.91
        358 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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