Frequencies for first 10,000 rows of alzhd variable in nhamcsed2014 dataset :

       Does |
    patient |
      have: |
Alzheimer's |
disease/Dem |
      entia |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,887       98.87       98.87
        Yes |        113        1.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017