Frequencies for first 10,000 rows of rx2v1c2 variable in nhamcsopd2008 dataset :

   for rx2, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,367       93.67       93.67
        001 |         49        0.49       94.16
        020 |          1        0.01       94.17
        040 |        125        1.25       95.42
        057 |        114        1.14       96.56
        081 |         93        0.93       97.49
        087 |          1        0.01       97.50
        097 |         66        0.66       98.16
        105 |         24        0.24       98.40
        115 |         13        0.13       98.53
        122 |        103        1.03       99.56
        133 |         18        0.18       99.74
        218 |          2        0.02       99.76
        242 |          6        0.06       99.82
        358 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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