Dementia onset, incidence and risk in type 2 diabetes: a matched cohort study with the Fremantle Diabetes Study Phase I
MetadataShow full item record
Aims/hypothesis: The study aimed to assess the incidence, age of onset, survival and relative hazard of dementia in well-categorised community-based patients with type 2 diabetes compared with a matched cohort of individuals without diabetes. Methods: A longitudinal observational study was undertaken involving 1291 participants with type 2 diabetes from the Fremantle Diabetes Study and 5159 matched residents without documented diabetes. Linkage with health-related databases was used to detect incident dementia. Relative hazards were assessed using both cause-specific and subdistribution proportional hazards models. Results: During 13.8 ± 5.8 years of follow-up, incident dementia occurred in 13.9% and 12.4% of the groups of participants with and without diabetes, respectively (p = 0.15). With type 2 diabetes, the incidence of dementia was higher (incidence rate ratio [IRR] 1.28, 95% CI 1.08, 1.51), as was the competing risk of death (IRR 1.50, 95% CI 1.38, 1.64). The ages when dementia was first recorded and when death with dementia occurred were both earlier with diabetes, by 1.7 (95% CI 0.6, 2.9) and 2.3 (95% CI 1.1, 3.6) years, respectively (both p ≤ 0.004). Type 2 diabetes was associated with an adjusted subdistribution HR of 1.18 (95% CI 1.00, 1.39), and a cause-specific HR of 1.51 (95% CI 1.27, 1.78) for all-cause dementia. Conclusions/interpretation: Type 2 diabetes is associated with an increased incidence of dementia, and dementia onset occurs at a younger age. The relative hazards of both dementia and premature mortality are increased and, as a consequence, the increased risk of dementia in type 2 diabetes is not as marked as suggested by cause-specific HRs.
Showing items related by title, author, creator and subject.
Type 2 Diabetes as a Risk Factor for Dementia in Women Compared With Men: A Pooled Analysis of 2.3 Million People Comprising More Than 100,000 Cases of DementiaChatterjee, S.; Peters, S.; Woodward, M.; Arango, S.; Batty, G.; Beckett, N.; Beiser, A.; Borenstein, A.; Crane, P.; Haan, M.; Hassing, L.; Hayden, K.; Kiyohara, Y.; Larson, E.; Li, C.; Ninomiya, T.; Ohara, T.; Peters, R.; Russ, T.; Seshadri, S.; Strand, B.; Walker, R.; Xu, W.; Huxley, Rachel (2015)OBJECTIVE: Type 2 diabetes confers a greater excess risk of cardiovascular disease in women than in men. Diabetes is also a risk factor for dementia, but whether the association is similar in women and men remains unknown. ...
Zilkens, Renate; Davis, W.; Spilsbury, Katrina; Semmens, James; Bruce, D. (2013)Diabetes is a risk factor for dementia, but relatively little is known about the epidemiology of the association. A retrospective population study using Western Australian hospital inpatient, mental health outpatient, and ...
Oral disease in relation to future risk of dementia and cognitive decline: Prospective cohort study based on the Action in Diabetes and Vascular Disease: Preterax and Diamicron Modified-Release Controlled Evaluation (ADVANCE) trialBatty, G.; Li, Q.; Huxley, Rachel; Zoungas, S.; Taylor, B.; Neal, B.; de Galan, B.; Woodward, M.; Harrap, S.; Colagiuri, S.; Patel, A.; Chalmers, J. (2013)Objective: Examine the association of oral disease with future dementia/cognitive decline in a cohort of people with type 2 diabetes. Methods: A total of 11,140 men and women aged 55-88 years at study induction with type ...