Frequencies for first 10,000 rows of rx2v1c1 variable in nhamcsopd2010 dataset :

   for rx2, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,803       48.03       48.03
        001 |        310        3.10       51.13
        020 |         39        0.39       51.52
        028 |          6        0.06       51.58
        040 |        633        6.33       57.91
        057 |      1,361       13.61       71.52
        081 |         73        0.73       72.25
        087 |        266        2.66       74.91
        097 |        217        2.17       77.08
        105 |        132        1.32       78.40
        113 |         29        0.29       78.69
        115 |        355        3.55       82.24
        122 |        381        3.81       86.05
        133 |        366        3.66       89.71
        218 |         49        0.49       90.20
        242 |        321        3.21       93.41
        254 |        208        2.08       95.49
        331 |          3        0.03       95.52
        358 |        426        4.26       99.78
        365 |         12        0.12       99.90
        899 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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