Frequencies for first 10,000 rows of rx1v1c2 variable in nhamcsopd2008 dataset :

   for rx1, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,198       91.98       91.98
        001 |        122        1.22       93.20
        020 |          2        0.02       93.22
        040 |        143        1.43       94.65
        057 |        118        1.18       95.83
        081 |        109        1.09       96.92
        087 |          2        0.02       96.94
        097 |        104        1.04       97.98
        105 |         43        0.43       98.41
        115 |         18        0.18       98.59
        122 |         88        0.88       99.47
        133 |         24        0.24       99.71
        242 |         12        0.12       99.83
        254 |          3        0.03       99.86
        358 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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