Frequencies for first 10,000 rows of alzhd variable in nhamcsed2015 dataset :

       Does |
    patient |
      have: |
Alzheimer's |
disease/Dem |
      entia |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,884       98.84       98.84
        Yes |        116        1.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017