Effect of digital technology interventions for cognitive function improvement in mild cognitive impairment and dementia: A systematic review and meta‐analysis

The development and commercialization of digital therapeutics are increasing. The aim of this study was to determine the effects of digital technology interventions on cognitive function, thereby providing evidence for the development and practical application of interventions to manage cognitive function in patients with mild cognitive impairment and dementia. We conducted a systematic review and meta-analysis of randomized controlled trials according to PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analysis) guidelines. Randomized controlled trials on digital technology interventions published until April 2023 were searched in PubMed, Embase, Cochrane Library, and Cumulative Index to Nursing and Allied Health Literature (CINAHL) databases without a period limit. Articles that identified the effects of digital technology interventions on cognitive function improvement in dementia and mild cognitive impairment were integrated and analyzed. RevMan software 5.4 was used for quality assessment and meta-analysis. Twelve out of 708 studies were included in the review and meta-analysis. Digital technology interventions had significant effects on global cognitive function (standardized mean difference [SMD] = 0.31; 95% confidence interval [CI] = 0.04-0.57; p = 0.02; I² = 60%). In addition, these interventions had significant effects on neuropsychological characteristics, including attention (SMD = 1.17; 95% CI = 0.36-1.97; p = 0.004; I² = 84%), visuospatial perception (SMD = 0.68; 95% CI = 0.19-1.17; p = 0.006; I² = 57%), and memory (SMD = 0.45; 95% CI = 0.19-0.71; p = 0.0007; I² = 22%). The results suggest that digital technology interventions help improve cognitive function in patients with dementia and mild cognitive impairment.