Frequencies for first 10,000 rows of rx6v1c2 variable in nhamcsopd2007 dataset :

   for rx6, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,832       98.32       98.32
        001 |         13        0.13       98.45
        040 |         17        0.17       98.62
        057 |         30        0.30       98.92
        081 |         58        0.58       99.50
        097 |          3        0.03       99.53
        105 |         18        0.18       99.71
        115 |          6        0.06       99.77
        122 |          9        0.09       99.86
        133 |          3        0.03       99.89
        218 |          3        0.03       99.92
        242 |          2        0.02       99.94
        358 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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