Frequencies for first 10,000 rows of rx4v1c1 variable in nhamcsopd2009 dataset :

   for rx4, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,258       72.58       72.58
        001 |        107        1.07       73.65
        020 |         36        0.36       74.01
        028 |          9        0.09       74.10
        040 |        477        4.77       78.87
        057 |        595        5.95       84.82
        081 |         48        0.48       85.30
        087 |        194        1.94       87.24
        097 |         82        0.82       88.06
        105 |         50        0.50       88.56
        113 |         22        0.22       88.78
        115 |        196        1.96       90.74
        122 |        183        1.83       92.57
        133 |        122        1.22       93.79
        218 |         34        0.34       94.13
        242 |        168        1.68       95.81
        254 |         96        0.96       96.77
        331 |          1        0.01       96.78
        358 |        317        3.17       99.95
        365 |          1        0.01       99.96
        899 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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