Random Digit Dialing (RDD) was used for both landlines and cell phones.

For more information, contact Laura Mehegan atlmehegan@aarp.org.

For media inquiries, contact Eden Godbee ategodbee@aarp.org.

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Adults 65-plus are at greatest risk.

Close up of a hand with a red bow made of string tied to one finger

Doctor reviewing brain scans

Woman whispering in man’s ear

Three-dimensional rendering of firing neurons

Doctor Visit

Senior man with trumpet