Frequencies for first 10,000 rows of ewarno variable in nhamcsopd2010 dataset :

   if yes, are |
   warnings of |
          drug |
interactions/c |
ontradindicati |
 ons provided? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |     10,000      100.00      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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