Digital exclusion was associated with higher odds of frailty and faster frailty progression among older adults across multiple international cohorts, and transitioning from digital exclusion to digital inclusion was linked to lower odds of frailty.
Key Findings
Results
Digital exclusion was significantly associated with higher odds of frailty in three of four international cohort studies examined.
CHARLS (China): OR = 2.90, 95% CI = 1.58–5.32
HRS (USA): OR = 1.37, 95% CI = 1.25–1.51
ELSA (England): OR = 1.33, 95% CI = 1.14–1.55
MHAS (Mexico) did not show a statistically significant association
Analyses were conducted using generalised estimating equations adjusted for potential confounders
Results
Digital exclusion was associated with faster frailty progression in two of the four cohort studies.
CHARLS: β = 0.007, 95% CI = 0.001–0.013
ELSA: β = 0.007, 95% CI = 0.006–0.008
Frailty progression was analysed using linear mixed-effect models
Frailty was measured using the frailty index (FI) ranging from 0 to 1, with frailty defined as FI ≥ 0.25
Results
Transitioning from digital exclusion to digital inclusion was associated with significantly lower odds of frailty compared with persistent digital exclusion.
Change in digital exclusion status over time was specifically analysed as a separate exposure
Participants who moved from being digitally excluded to digitally included showed reduced frailty likelihood
This finding suggests a potentially modifiable relationship between internet use and frailty outcomes
The analysis compared those who transitioned to those who remained persistently excluded
Results
A considerable proportion of older adults across all four cohorts still experienced digital exclusion during the study period.
Digital exclusion was defined as absence from Internet use by self-reported data
Sample sizes were: 9,091 from CHARLS, 13,210 from HRS, 6,065 from ELSA, and 9,067 from MHAS
All four cohorts are prospective longitudinal studies spanning China, the USA, England, and Mexico
The study notes digital exclusion has emerged as a critical determinant of health inequality among older adults
Results
The association between digital exclusion and frailty was strongest in the Chinese cohort (CHARLS), with an odds ratio nearly twice that observed in the US and English cohorts.
CHARLS OR = 2.90 (95% CI = 1.58–5.32) compared to HRS OR = 1.37 and ELSA OR = 1.33
MHAS (Mexico) did not demonstrate a statistically significant association, suggesting heterogeneity across settings
Differences may reflect varying levels of digital infrastructure, socioeconomic context, and baseline rates of internet use across countries
All analyses adjusted for potential confounders using generalised estimating equations
What This Means
This research suggests that older adults who do not use the internet — referred to as being 'digitally excluded' — are more likely to be frail and to become frail more quickly over time. The study drew on data from over 37,000 older adults across four countries (China, the United States, England, and Mexico) and tracked them over multiple years. In three of the four countries studied, people who did not use the internet had meaningfully higher odds of being frail, with the strongest association found in China, where digitally excluded older adults had nearly three times the odds of frailty compared to internet users.
The study also found that digital exclusion was linked to faster worsening of frailty over time in China and England. Importantly, older adults who started out digitally excluded but later began using the internet showed lower odds of frailty compared to those who remained excluded throughout the study period. This suggests that gaining access to and use of digital technology may be relevant to maintaining health in older age, though the study cannot prove that internet use directly causes better health outcomes.
This research highlights digital exclusion as a meaningful social factor connected to physical health decline in older adults around the world. The findings suggest that efforts to improve digital access and digital literacy among older people — such as providing internet access, affordable devices, and training — may be worth considering as part of broader strategies to support healthy ageing and reduce health inequalities.
Wang H, Sun R, Yan B, Wei Y, Wu Y, Ling F, et al.. (2026). Digital exclusion and frailty among older adults: findings from four longitudinal cohort studies.. Age and ageing. https://doi.org/10.1093/ageing/afag133