Frequencies for first 10,000 rows of bloodcx variable in nhamcsed2012 dataset :

      Blood |
    culture |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,615       96.15       96.15
        Yes |        385        3.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016