Frequencies for first 10,000 rows of rx5v1c2 variable in nhamcsopd2008 dataset :

   for rx5, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,746       97.46       97.46
        001 |         18        0.18       97.64
        020 |          3        0.03       97.67
        040 |         36        0.36       98.03
        057 |         46        0.46       98.49
        081 |         69        0.69       99.18
        087 |          1        0.01       99.19
        097 |          9        0.09       99.28
        105 |         10        0.10       99.38
        115 |          8        0.08       99.46
        122 |         31        0.31       99.77
        133 |          6        0.06       99.83
        218 |          1        0.01       99.84
        242 |          6        0.06       99.90
        254 |          2        0.02       99.92
        358 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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