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This population-based study explores the association between multimorbidity and health service utilization among dementia patients in the UK. Findings reveal a significant increase in service use driven by comorbidities, underscoring the importance of considering multimorbidity in care planning for this population.
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The association of multimorbidity with health service utilisation among patients with dementia in the UK: a population-based study J Browne, DA Edwards, KM Rhodes, DJ Brimicombe, RA Payne
Background • Ageing population • Increasing prevalence of dementia • Changing demands on healthcare and social care funding and service design Canadian Study of Health and Aging
Background • It’s not just about “dementia patients” • Dementia is commonly associated with additional comorbidities Barnett, Lancet 2012
How do comorbidities impact upon health service utilisation in the dementia population?
Methods • Retrospective cohort study • CPRD • Incident dementia cases diagnosed 2008/9 • 65 Read codes, including any subtype and unspecified • 5-year follow-up • minimum 3-months
Methods Barnett, Lancet 2012
Methods • Primary care consultations • All hospital admissions • All primary care prescriptions • Time to death
Methods • Association between comorbidity count and outcome • Negative binomial regression (service use) • Cox regression (death) • Adjustment for age, gender, practice, dementia treatment, deprivation
Service utilisation Mean follow-up 3.0 years
Survival • Death rate 12.7 per 100 patient years • HR 1.56 (95% CI 1.37-1.78), ≥6 vs. 2-3 comorbidities p<0.001
Consequences • For a woman aged 80-85 years with 6 or more comorbidities, over 3 years: • 18 more consultations • 131 more prescriptions • 2 more hospitalisations • Additional cost £5137 (compared to similar individual with 2-3 comorbidities)
Strengths and limitations • First such study in UK • Large, representative sample • Range of relevant outcomes • Misclassification of comorbidities varying with health service contact • Crude measures of service use • Differential loss to follow-up
Conclusions • Comorbidities are very common in the context of dementia • Comorbidities drive a substantial increase in health service utilisation • Multimorbidity must be considered when planning care services for people with dementia