Frequencies for first 10,000 rows of rx5v1c2 variable in nhamcsed2009 dataset :

   for rx5, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,823       98.23       98.23
        001 |         21        0.21       98.44
        040 |         26        0.26       98.70
        057 |         52        0.52       99.22
        081 |          7        0.07       99.29
        097 |          3        0.03       99.32
        115 |          8        0.08       99.40
        122 |         52        0.52       99.92
        133 |          1        0.01       99.93
        242 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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