Frequencies for first 10,000 rows of temptake variable in nhamcsopd2007 dataset :

temperature |
      taken |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      6,005       60.05       60.05
        yes |      3,995       39.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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