Digital Cognitive Tests for Dementia Screening: A Systematic Review

Context: The number of people with dementia is increasing dramatically. With the outbreak of the COVID-19 pandemic, digital screening tests can play a significant role in the remote and timely detection of people with dementia. This study aimed to review digital cognitive tests for dementia screening. Methods: We searched Web of Science, ProQuest, PubMed, Scopus, and Cochrane using related terms such as “dementia,” “mobile,” “digital,” “computer,” and “cognitive assessment,” leading to the emergence of 1,348 articles. Titles, abstracts, and full texts were screened to select the relevant articles based on inclusion/exclusion criteria. Study characteristics and digital test features such as diagnostic performance and deploying platforms were extracted from selected articles. The risk of bias and reporting quality were evaluated in the included studies. Results: Out of 1,348 identified articles, 32 were eligible for inclusion. We categorized digital cognitive tests into 3 groups based on deploying platforms: 1) Mobile-based screening tests (59.5%), 2) desktop-based screening tests (28%), and 3) web-based screening tests (12.5%). Conclusions: Digital cognitive tests, especially mobile-based screening tests, facilitate the timely diagnosis of dementia. The development of AI-based screening tests and the use of technologies such as virtual reality and chatbots will set a bright future in the early detection of dementia.