Frequencies for first 10,000 rows of rx5v1c1 variable in nhamcsopd2009 dataset :

   for rx5, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,831       78.31       78.31
        001 |         84        0.84       79.15
        020 |         27        0.27       79.42
        028 |          5        0.05       79.47
        040 |        402        4.02       83.49
        057 |        436        4.36       87.85
        081 |         32        0.32       88.17
        087 |        165        1.65       89.82
        097 |         81        0.81       90.63
        105 |         37        0.37       91.00
        113 |         17        0.17       91.17
        115 |        185        1.85       93.02
        122 |        114        1.14       94.16
        133 |        108        1.08       95.24
        218 |         22        0.22       95.46
        242 |        114        1.14       96.60
        254 |         53        0.53       97.13
        358 |        286        2.86       99.99
        899 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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