Frequencies for first 10,000 rows of rx4v1c2 variable in namcs2007 dataset :

   for rx4, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,713       97.13       97.13
        001 |         11        0.11       97.24
        040 |         20        0.20       97.44
        057 |         52        0.52       97.96
        081 |         92        0.92       98.88
        087 |          1        0.01       98.89
        097 |         29        0.29       99.18
        105 |         36        0.36       99.54
        115 |         10        0.10       99.64
        122 |         15        0.15       99.79
        133 |          5        0.05       99.84
        242 |          2        0.02       99.86
        358 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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