Frequencies for first 10,000 rows of rx6v1c1 variable in nhamcsopd2008 dataset :

   for rx6, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,396       83.96       83.96
        001 |         51        0.51       84.47
        020 |         18        0.18       84.65
        028 |          2        0.02       84.67
        040 |        262        2.62       87.29
        057 |        289        2.89       90.18
        081 |         30        0.30       90.48
        087 |        155        1.55       92.03
        097 |         60        0.60       92.63
        105 |         48        0.48       93.11
        115 |        120        1.20       94.31
        122 |        109        1.09       95.40
        133 |         72        0.72       96.12
        218 |         18        0.18       96.30
        242 |         81        0.81       97.11
        254 |         53        0.53       97.64
        331 |          5        0.05       97.69
        358 |        226        2.26       99.95
        365 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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