Frequencies for first 10,000 rows of rx2v1c2 variable in nhamcsed2008 dataset :

   for rx2, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,872       88.72       88.72
        001 |        111        1.11       89.83
        020 |          1        0.01       89.84
        040 |        165        1.65       91.49
        057 |        415        4.15       95.64
        081 |         72        0.72       96.36
        097 |         13        0.13       96.49
        105 |          6        0.06       96.55
        115 |          8        0.08       96.63
        122 |        290        2.90       99.53
        133 |         22        0.22       99.75
        242 |         22        0.22       99.97
        358 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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