Frequencies for first 10,000 rows of rx1v1c2 variable in nhamcsopd2011 dataset :

   For RX1, |
 level 1 of |
MULTUM drug |
category #2 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,192       91.92       91.92
        001 |         87        0.87       92.79
        020 |          3        0.03       92.82
        040 |        110        1.10       93.92
        057 |        124        1.24       95.16
        081 |        143        1.43       96.59
        087 |          4        0.04       96.63
        097 |        110        1.10       97.73
        105 |         59        0.59       98.32
        115 |         27        0.27       98.59
        122 |         71        0.71       99.30
        133 |         29        0.29       99.59
        218 |         12        0.12       99.71
        242 |          9        0.09       99.80
        254 |         10        0.10       99.90
        358 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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