Frequencies for first 10,000 rows of rx4v1c1 variable in nhamcsed2008 dataset :

   for rx4, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,338       83.38       83.38
        001 |        235        2.35       85.73
        020 |          4        0.04       85.77
        028 |          2        0.02       85.79
        040 |        115        1.15       86.94
        057 |        670        6.70       93.64
        081 |         35        0.35       93.99
        087 |        124        1.24       95.23
        097 |         70        0.70       95.93
        105 |         53        0.53       96.46
        115 |        103        1.03       97.49
        122 |        134        1.34       98.83
        133 |         40        0.40       99.23
        218 |          3        0.03       99.26
        242 |         18        0.18       99.44
        254 |         13        0.13       99.57
        331 |          4        0.04       99.61
        358 |         28        0.28       99.89
        365 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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