Didn't you use 70-75% twice? Once in the text body and once in the list? Wouldn't your method leave you with 31% at the end if you just used this age bracket o

Didn't you use 70-75% twice? Once in the text body and once in the list? Wouldn't your method leave you with 31% at the end if you just used this age bracket once and didn't have the extra double cycle? But for the record, I'm sure you are right. The ODDS of developing start doubling. Not the amount of people afflicted (No doubt a somewhat complicated figure as death, not insignificant at those ages, starts changing the equation. Do people with Alzheimer die at the same rate as those without?). Thanks for the explanation.