ArticleAustralasian journal on ageing2026
Regional and Socioeconomic Disparities in Frailty Across Tasmania: Evidence From Island Study Linking Ageing and Neurodegenerative Disease.
Article in Australasian journal on ageing, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveAlthough frailty appears higher in rural and socioeconomically disadvantaged areas, existing evidence often lacks adjustment for possible population confounders. This study examined the independent associations between geographic remoteness and area-level socioeconomic status with frailty.
methodsWe constructed a 33-item frailty index using data from 5740 participants of the Island Study Linking Ageing and Neurodegenerative Disease (ISLAND), a web-based longitudinal cohort of adults aged 50 years and over in Tasmania, Australia. After linking participant postcodes to Modified Monash Model remoteness and Index of Relative Socioeconomic Advantage and Disadvantage, we examined frailty distribution and its associations with geographic and sociodemographic factors using descriptive statistics, spatial mapping and multivariable linear regression models.
resultsThe analytical sample mean age was 69.3 years (SD = 8.0) and most were women (72%). Frailty index scores followed a gamma distribution (mean score = 0.16, SD = 0.09), increased with age and were highest in central and western areas of Tasmania. After adjustment for age, gender, education, retirement and migrant status, frailty index scores were significantly higher in rural towns (β = 0.011 [95% confidence interval, CI = 0.005, 0.016]) and remote communities (β = 0.023 [95% CI = 0.009, 0.038]) than regional centres. Similarly, after full adjustment, compared with areas of the highest socioeconomic advantage, frailty was significantly higher in areas of middle (β = 0.013 [95% CI = 0.007, 0.018]) or low (β = 0.024 [95% CI = 0.018, 0.030]) socioeconomic advantage.
conclusionsThe distribution of frailty across Tasmania varied by geographic remoteness and socioeconomic disadvantage. Integrating frailty assessment into regional health planning may support targeted interventions for vulnerable subpopulations, particularly in rural and disadvantaged communities.
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