Frequencies for first 10,000 rows of rx2v1c1 variable in nhamcsopd2007 dataset :

   for rx2, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      5,327       53.27       53.27
        001 |        328        3.28       56.55
        020 |         29        0.29       56.84
        028 |          3        0.03       56.87
        040 |        659        6.59       63.46
        057 |      1,035       10.35       73.81
        081 |         52        0.52       74.33
        087 |        240        2.40       76.73
        097 |        217        2.17       78.90
        105 |        108        1.08       79.98
        115 |        275        2.75       82.73
        122 |        372        3.72       86.45
        133 |        270        2.70       89.15
        218 |         14        0.14       89.29
        242 |        413        4.13       93.42
        254 |        237        2.37       95.79
        331 |          5        0.05       95.84
        358 |        412        4.12       99.96
        365 |          1        0.01       99.97
        899 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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