Frequencies for first 10,000 rows of rx1v1c1 variable in nhamcsopd2007 dataset :

   for rx1, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      3,205       32.05       32.05
        001 |        742        7.42       39.47
        020 |        105        1.05       40.52
        028 |          5        0.05       40.57
        040 |        697        6.97       47.54
        057 |      1,553       15.53       63.07
        081 |         83        0.83       63.90
        087 |        270        2.70       66.60
        097 |        352        3.52       70.12
        105 |        137        1.37       71.49
        115 |        657        6.57       78.06
        122 |        369        3.69       81.75
        133 |        430        4.30       86.05
        218 |         16        0.16       86.21
        242 |        515        5.15       91.36
        254 |        372        3.72       95.08
        331 |          2        0.02       95.10
        358 |        481        4.81       99.91
        365 |          2        0.02       99.93
        899 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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