Earlier age of dementia onset and shorter survival times in dementia patients with diabetes
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 death records was used to compare the age at index dementia record (proxy for...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Oxford University Press
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/10441 |
| _version_ | 1848747534305984512 |
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| author | Zilkens, Renate Davis, W. Spilsbury, Katrina Semmens, James Bruce, D. |
| author_facet | Zilkens, Renate Davis, W. Spilsbury, Katrina Semmens, James Bruce, D. |
| author_sort | Zilkens, Renate |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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 death records was used to compare the age at index dementia record (proxy for onset age) and survival outcomes in dementia patients with and without preexisting diabetes (n = 25,006; diabetes, 17.3%). Inpatient records from 1970 determined diabetes history in this study population with incident dementia in years 1990–2005. Dementia onset and death occurred an average 2.2 years and 2.6 years earlier, respectively, in diabetic compared with nondiabetic patients. Age-specific mortality rates were increased in patients with diabetes. In an adjusted proportional hazard model, the death rate was increased with long-duration diabetes, particularly with early age onset dementia. In dementia diagnosed before age 65 years, those with a ≥15-year history of diabetes died almost twice as fast as those without diabetes (hazard ratio = 1.9, 95% confidence interval: 1.3, 2.9). These results suggest that, in patients with diabetes, dementia onset occurs on average 2 years early and survival outcomes are generally poorer. The effect of diabetes on onset, survival, and mortality is greatest when diabetes develops before middle age and after 15 years’ diabetes duration. The impact of diabetes on dementia becomes progressively attenuated in older age groups. |
| first_indexed | 2025-11-14T06:50:40Z |
| format | Journal Article |
| id | curtin-20.500.11937-10441 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:50:40Z |
| publishDate | 2013 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-104412019-02-19T05:34:46Z Earlier age of dementia onset and shorter survival times in dementia patients with diabetes Zilkens, Renate Davis, W. Spilsbury, Katrina Semmens, James Bruce, D. diabetes mellitus proportional hazards models alzheimer disease mortality dementia survival retrospective studies 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 death records was used to compare the age at index dementia record (proxy for onset age) and survival outcomes in dementia patients with and without preexisting diabetes (n = 25,006; diabetes, 17.3%). Inpatient records from 1970 determined diabetes history in this study population with incident dementia in years 1990–2005. Dementia onset and death occurred an average 2.2 years and 2.6 years earlier, respectively, in diabetic compared with nondiabetic patients. Age-specific mortality rates were increased in patients with diabetes. In an adjusted proportional hazard model, the death rate was increased with long-duration diabetes, particularly with early age onset dementia. In dementia diagnosed before age 65 years, those with a ≥15-year history of diabetes died almost twice as fast as those without diabetes (hazard ratio = 1.9, 95% confidence interval: 1.3, 2.9). These results suggest that, in patients with diabetes, dementia onset occurs on average 2 years early and survival outcomes are generally poorer. The effect of diabetes on onset, survival, and mortality is greatest when diabetes develops before middle age and after 15 years’ diabetes duration. The impact of diabetes on dementia becomes progressively attenuated in older age groups. 2013 Journal Article http://hdl.handle.net/20.500.11937/10441 10.1093/aje/kws387 Oxford University Press fulltext |
| spellingShingle | diabetes mellitus proportional hazards models alzheimer disease mortality dementia survival retrospective studies Zilkens, Renate Davis, W. Spilsbury, Katrina Semmens, James Bruce, D. Earlier age of dementia onset and shorter survival times in dementia patients with diabetes |
| title | Earlier age of dementia onset and shorter survival times in dementia patients with diabetes |
| title_full | Earlier age of dementia onset and shorter survival times in dementia patients with diabetes |
| title_fullStr | Earlier age of dementia onset and shorter survival times in dementia patients with diabetes |
| title_full_unstemmed | Earlier age of dementia onset and shorter survival times in dementia patients with diabetes |
| title_short | Earlier age of dementia onset and shorter survival times in dementia patients with diabetes |
| title_sort | earlier age of dementia onset and shorter survival times in dementia patients with diabetes |
| topic | diabetes mellitus proportional hazards models alzheimer disease mortality dementia survival retrospective studies |
| url | http://hdl.handle.net/20.500.11937/10441 |