Frequencies for first 10,000 rows of rx7v1c2 variable in namcs2009 dataset :

   for rx7, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,844       98.44       98.44
        001 |          6        0.06       98.50
        040 |         36        0.36       98.86
        057 |         20        0.20       99.06
        081 |         41        0.41       99.47
        087 |          1        0.01       99.48
        097 |         13        0.13       99.61
        105 |          8        0.08       99.69
        115 |          2        0.02       99.71
        122 |         10        0.10       99.81
        133 |          2        0.02       99.83
        242 |          1        0.01       99.84
        254 |          2        0.02       99.86
        331 |          1        0.01       99.87
        358 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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