Frequencies for first 10,000 rows of rx2v1c2 variable in nhamcsopd2011 dataset :

   For RX2, |
 level 1 of |
MULTUM drug |
category #2 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,358       93.58       93.58
        001 |         33        0.33       93.91
        020 |          3        0.03       93.94
        040 |         79        0.79       94.73
        057 |        151        1.51       96.24
        081 |        100        1.00       97.24
        087 |          1        0.01       97.25
        097 |         32        0.32       97.57
        105 |         55        0.55       98.12
        113 |          2        0.02       98.14
        115 |         22        0.22       98.36
        122 |         93        0.93       99.29
        133 |         29        0.29       99.58
        218 |          7        0.07       99.65
        242 |         10        0.10       99.75
        254 |          8        0.08       99.83
        331 |          1        0.01       99.84
        358 |         15        0.15       99.99
        899 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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