Frequencies for first 10,000 rows of rx3v1c1 variable in nhamcsopd2009 dataset :

   for rx3, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,393       63.93       63.93
        001 |        160        1.60       65.53
        020 |         46        0.46       65.99
        028 |         10        0.10       66.09
        040 |        560        5.60       71.69
        057 |        858        8.58       80.27
        081 |         68        0.68       80.95
        087 |        230        2.30       83.25
        097 |        119        1.19       84.44
        105 |         78        0.78       85.22
        113 |         24        0.24       85.46
        115 |        262        2.62       88.08
        122 |        212        2.12       90.20
        133 |        175        1.75       91.95
        218 |         34        0.34       92.29
        242 |        237        2.37       94.66
        254 |        151        1.51       96.17
        358 |        373        3.73       99.90
        365 |          3        0.03       99.93
        899 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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