The impact of social isolation and digital exclusion on mental and physical health in older adults: A meta-analysis.

Social isolation and digital exclusion were associated with a 60% higher likelihood of depressive symptoms in older adults.

• Pooled OR for depression was 1.60 (95% CI: 1.39–1.84, P < .001)
• Analysis was based on approximately 111,784 participants
• Random-effects models were used to calculate pooled odds ratios
• Moderate heterogeneity was observed for depression outcomes (I2 = 43%)
• No evidence of small-study bias was found

The association between social isolation or digital exclusion and cognitive decline was nonsignificant.

• Pooled OR for cognitive decline was 1.03 (95% CI: 0.92–1.15)
• Cognitive decline was assessed in 3 longitudinal cohorts
• Heterogeneity for cognition outcomes was moderate (I2 = 55%)
• The wide confidence interval spanning 1.0 indicates no statistically significant association

Physical function outcomes were consistently worse among socially isolated or digitally excluded older adults.

• Outcomes included reductions in short physical performance battery scores and increased activities of daily living disability
• Physical function outcomes were analyzed qualitatively due to insufficient data for quantitative pooling
• These findings were described as 'consistently worse' among isolated or digitally excluded individuals

The meta-analysis included 11 primary studies with over 350,000 participants from multiple world regions.

• Studies included 9 observational studies and 2 randomized controlled trials
• All studies were published since the year 2000
• Participants were drawn from North America, Europe, and Asia
• The study population was community-dwelling older adults
• Total participant count exceeded 350,000

Digital exclusion was characterized as a potential 'super-social determinant' of health in older adults.

• The authors argue digital exclusion may independently and significantly contribute to depression risk beyond social isolation alone
• The findings underscore 'the need for integrated interventions that address both social connectivity and digital literacy'
• This framing positions digital exclusion as a compounding factor amplifying the effects of social isolation on health