Frequencies for first 10,000 rows of rx2v1c2 variable in namcs2010 dataset :

   for rx2, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,403       94.03       94.03
        001 |         48        0.48       94.51
        040 |         99        0.99       95.50
        057 |        128        1.28       96.78
        081 |         96        0.96       97.74
        087 |          1        0.01       97.75
        097 |         53        0.53       98.28
        105 |         24        0.24       98.52
        115 |         10        0.10       98.62
        122 |         72        0.72       99.34
        133 |         21        0.21       99.55
        218 |          9        0.09       99.64
        242 |          6        0.06       99.70
        254 |          3        0.03       99.73
        358 |         27        0.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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