Frequencies for first 10,000 rows of drg2ing5 variable in nhamcsed2003 dataset :

  ingredient code #5 for medication |
                                 #2 |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                         sodium ion |          9        0.09        0.09
                           thiamine |          1        0.01        0.10
                          vitamin a |          4        0.04        0.14
                 potassium chloride |          1        0.01        0.15
                      cod liver oil |          1        0.01        0.16
                                  . |      9,984       99.84      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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