Hi Dr. MEL, could you please explain to me the benefits of a telephone survey compared to an in-person survey with older adults as target participants?

My pleasure.

Great! Thank you so much for the detailed reply.

Usually, a face-to-face survey can get more reliable data with more control and observation on interviews while it also takes more time, human resources, and money. Compared to the face-to-face survey, the telephone survey on older adults is more convenient, cheap, and accessible under epidemic.