Frequencies for first 10,000 rows of rx6v1c1 variable in nhamcsed2009 dataset :

   for rx6, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,538       95.38       95.38
        001 |         62        0.62       96.00
        040 |         40        0.40       96.40
        057 |        171        1.71       98.11
        081 |          7        0.07       98.18
        087 |         39        0.39       98.57
        097 |         14        0.14       98.71
        105 |         10        0.10       98.81
        113 |          1        0.01       98.82
        115 |         35        0.35       99.17
        122 |         38        0.38       99.55
        133 |         14        0.14       99.69
        242 |          6        0.06       99.75
        254 |          4        0.04       99.79
        358 |         20        0.20       99.99
        365 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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