| 1. |
- Agüero-Torres, Hedda, et al.
(författare)
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Institutionalization in the elderly : The role of chronic diseases and dementia. Cross-sectional and longitudinal data from a population-based study
- 2001
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Ingår i: Journal of Clinical Epidemiology. - : Elsevier. - 0895-4356 .- 1878-5921. ; 54:8, s. 795-801
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Tidskriftsartikel (refereegranskat)abstract
- A population-based study of 1810 persons, aged 75+, was investigated to evaluate the role of dementia and other chronic diseases as determinants of institutionalization in the elderly. The study population was examined at baseline and after a 3-year interval. After adjustment for sociodemographic characteristics, functional dependence, dementia, cerebrovascular disease and hip fracture were associated with living in an institution at baseline. Additionally, functional dependence, hip fracture and dementia were also associated with moving to an institution during the 3-year follow-up. In a similar analysis, including only nondemented subjects, the Mini-Mental State Examination emerged as one of the strongest determinants. The population attributable risk percentage of institutionalization during the 3-year follow-up due to dementia was 61%. This study confirms that dementia and cognitive impairment are the main contributors to institutionalization in the elderly, independently of their sociodemographic status, social network, or functional status.
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| 2. |
- Fratiglioni, Laura, et al.
(författare)
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Prevention of Alzheimer's disease and dementia : Major findings from the Kungsholmen Project
- 2007
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Ingår i: Physiology and Behavior. - : Elsevier. - 0031-9384 .- 1873-507X. ; 92:1-2, s. 98-104
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Tidskriftsartikel (refereegranskat)abstract
- The aging of the population is a worldwide phenomenon, and studying age-related diseases has become a relevant issue from both a scientific and a public health perspective. This review summarises the major findings concerning prevention of Alzheimer's disease (AD) and other dementias from a population-based study, the Kungsholmen Project. The study addresses risk- and protective factors for AD and dementia from a lifetime perspective: at birth, during childhood, in adult life, and in old age. Although many aspects of the dementias are still unclear, some risk factors have been identified and interesting hypotheses have been suggested for other putative risk or protective factors. At the moment it is also possible to delineate some preventative strategies for dementia.
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| 3. |
- Fratiglioni, Laura, et al.
(författare)
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Åldrandets epidemiologi med fokus på fysisk och mental funktionsförmåga
- 2001
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Ingår i: Läkartidningen. - Stockholm : Sveriges läkarförbund. - 0023-7205 .- 1652-7518. ; 98:6, s. 552-558
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Tidskriftsartikel (refereegranskat)abstract
- In the past decades, the »graying« of the population has emerged as a world-wide phenomenon, leading to an increased interest in research on aging. Many population-based studies have been initiated in several countries, such as the Kungsholmen Project in Stockholm, Sweden. These studies have shown that older adults can be recruited to participate in intensive physiological and clinical evaluations, and that longitudinal surveys are well accepted by the elderly. Comorbidity and physical and mental functioning have emerged as important variables for describing health status and identifying risk factors. Dementia arose as one of the most common diseases in the very old, as dementia prevalence nearly doubles every fifth year. Some risk factors for Alzheimer’s disease have been identified and interesting working hypotheses have been suggested. The natural history of the dementias have been sufficiently outlined for allocating medical and social resources, and for counseling patients and relatives.
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| 4. |
- Huang, Wenyong, et al.
(författare)
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APOE Genotype, Family History of Dementia, and Alzheimer Disease Risk : A 6-Year Follow-up Study
- 2004
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Ingår i: Archives of Neurology. - : American Medical Association. - 0003-9942 .- 1538-3687. ; 61:12, s. 1930-1934
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Tidskriftsartikel (refereegranskat)abstract
- Background Both family aggregation and apolipoprotein E (APOE) ε4 allele are well-known risk factors for dementia, but the relation between these two factors remains unclear.Objective To explore whether the risk of dementia and Alzheimer disease (AD) due to a positive family history is explained by APOE genotypes.Design Community-based cohort study.Setting The Kungsholmen district of Stockholm, Sweden.Participants A total of 907 nondemented people 75 years or older, followed up for 6 years to detect incident dementia and AD cases according to the diagnostic criteria of the Diagnostic and Statistical Manual of Mental Disorders, Revised Third Edition.Main Outcome Measures Risk of dementia and AD by Cox proportional hazards models after controlling for several potential confounders.Results Subjects who had at least 2 siblings with dementia were at an increased risk of AD. Individuals with both APOE ε4 allele and at least 2 affected first-degree relatives had a higher risk of dementia and AD compared with those without these 2 factors. Similar results were obtained for history of dementia separately in parents or siblings. Among the ε4 allele carriers, subjects with 2 or more first-degree demented relatives had increased risk of dementia and AD, whereas no increased risk was detected among non–ε4 carriers.Conclusions Family history of dementia was associated with an increased risk of dementia and AD in this very old population, but only among APOE ε4 carriers. This suggests the existence of other genetic or environmental risk factors that may be active in the presence of the APOE ε4 allele.The role of both family history of dementia and the apolipoprotein E (APOE) gene in the development of Alzheimer disease (AD) has been extensively investigated. There is strong evidence to suggest that APOE ε4 allele carriers, as well as subjects with a family history of dementia, have an increased risk of AD.Familial aggregation and genetic risk factors appear to be most influential in AD at relatively early ages.However, there are reports supporting an effect of both familial aggregation and APOE ε4 even in late-onset AD,although a lower effect in comparison with early-onset cases has been detected.It is hypothesized that APOE ε4 allele might explain the association between family history of dementia and AD. Previous studies have tried to evaluate this hypothesis, but to what extent familial aggregation is due to the association between the ε4 allele and AD remains equivocal. Some studies indicated that ε4-positive patients with AD tended to have a higher rate of family history of dementia than ε4-negative patients. Conversely, patients with family history of AD are also more likely to carry the ε4 allele than patients without family history.Other studies, however, showed that the APOE ε4 allele was not related to familial aggregation of AD.Most previous analyses have been hospital-based case-control studies. Because of ascertainment bias and severe truncation of data, these studies might overestimate the effects of family history and APOE ε4 allele, especially in very old people. Only a small-scale prospective study has examined both family history of dementia and APOE ε4 allele in relation to AD risk among people 75 years or older.In a previous study within the Kungsholmen Project, a strong familial aggregation was detected among prevalent cases of late-onset AD, but the contribution of the APOE ε4 allele was not considered. In the present study, we examined the 6-year follow-up data from the same project to explore whether the risk of dementia and AD due to a positive family history is explained by APOE genotypes.
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| 5. |
- Morse, Douglas E., et al.
(författare)
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Prosthetic crowns and other clinical risk indicators of caries among old-old Swedish adults : Findings from the KEOHS Project. Kungsholmen Elders Oral Health Study
- 2002
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Ingår i: Gerodontology. - : John Wiley & Sons. - 0734-0664 .- 1741-2358. ; 19:2, s. 73-79
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: The Kungsholmen Elders Oral Health Study (KEOHS) evaluated the oral health status of generally healthy, community-dwelling persons over the age of 80 living in Kungsholmen, Sweden. This paper explored possible clinical risk indicators of coronal and root caries among the KEOHS subjects.Design: In this cross-sectional study, dentate KEOHS subjects received a caries assessment using defined visual, tactile criteria.Setting: Examinations were carried out in two local clinics by standardized examiners.Subjects: One hundred twenty-nine dentate persons were examined.Main Outcome Measures: The examination identified decayed and filled surfaces, prosthetic crowns, and missing teeth.Results: More root than coronal surfaces had untreated decay, and secondary root caries contributed the greatest number of decayed surfaces. Ninety percent of the examined dentate subjects had at least one prosthetic crown. Root surfaces exposed to crown margins were more likely to have caries than root surfaces not so exposed, particularly among women. The presence of untreated coronal caries (yes/no) was positively associated with having untreated root caries and an intermediate number (14–20) of teeth, but inversely associated with having 4+ prosthetic crowns. Active root caries (yes/no) was positively associated with having untreated coronal caries, 14–20 teeth, and 4+ prosthetic crowns. Nearly 20% of ident2ified root lesions were present at or below the gingival margin, and most (88%) were secondary caries associated with crown margins (65%) or other restorations (23%).Conclusions: Our findings suggest that some dental characteristics, including the presence of prosthetic crowns, are risk indicators for the presence of untreated coronal and root caries.
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| 6. |
- Qiu, Chengxuan, et al.
(författare)
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Decline in blood pressure over time and risk of dementia : a longitudinal study from the Kungsholmen project
- 2004
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Ingår i: Stroke. - : American Stroke Association. - 0039-2499 .- 1524-4628. ; 35:8, s. 1810-1815
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Tidskriftsartikel (refereegranskat)abstract
- Background and Purpose—Low blood pressure has been related to an increased risk of dementia. We sought to verify blood pressure variations before and after a dementia diagnosis and to relate blood pressure decline to subsequent Alzheimer disease and dementia.Methods—A community dementia-free cohort aged _75 years (n_947) underwent follow-up examinations twice over a period of 6 years to detect dementia cases (Diagnostic and Statistical Manual of Mental Disorders, 3rd edition, revised [DSM-III-R] criteria, n_304). Blood pressure variation before and after dementia diagnosis was verified with linear mixed-effects models. Using the dementia-free cohort identified at first follow-up (n_719), the association between blood pressure decline from baseline to first follow-up and subsequent risk of dementia was examined.Results—Blood pressure markedly decreased over 3 years before dementia diagnosis and afterward, whereas no substantial decline was present 3 to 6 years before the diagnosis. However, among subjects with baseline systolic pressure _160 mm Hg, systolic pressure decline _15 mm Hg occurring 3 to 6 years before diagnosis was associated with relative risks (95% CI) of 3.1 (1.3 to 7.0) for Alzheimer disease and 3.1 (1.5 to 6.3) for dementia. There was a dose–response relationship between systolic pressure decline and dementia risk in subjects with vascular disease.Conclusions—Blood pressure starts to decrease only 3 years before dementia diagnosis and continues to decline afterward. A greater decline in systolic pressure occurring 3 to 6 years before diagnosis is associated with an increased risk of dementia only in older people with already low blood pressure or affected by vascular disorders.
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| 7. |
- Qiu, Chengxuan, et al.
(författare)
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Lifetime principal occupation and risk of Alzheimer's disease in the Kungsholmen project
- 2003
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Ingår i: American Journal of Industrial Medicine. - : Wiley. - 0271-3586 .- 1097-0274. ; 43:2, s. 204-211
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Tidskriftsartikel (refereegranskat)abstract
- BackgroundSome studies suggest that manual work is associated with dementia. This study is aimed at identifying the specific occupational categories that may be related to dementia.MethodsA cohort of 913 non-demented subjects aged 75 + years was longitudinally examined twice over 6 years to detect incident dementia using the DSM-III-R diagnostic criteria. The lifetime longest occupations of all subjects were divided into different categories according to the occupation-based classification system. Data were analyzed with Cox models.ResultsDuring the follow-up period, 260 subjects were diagnosed with dementia (197 with Alzheimer's disease). Manual work was associated with an increased risk of dementia, and the association was dependent on educational level. Compared with non-manual work, manual work involving goods production had a multi-adjusted relative risk (95% CI) of 1.6 (1.0–2.5, P = 0.046) for Alzheimer's disease and 1.4 (0.9–2.1) for dementia.ConclusionsAn association between goods production, manual work and Alzheimer's disease found in this study suggests that factors in the mid-twentieth century goods production environment may be involved in the development of Alzheimer's disease.
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| 8. |
- Qiu, Chengxuan, et al.
(författare)
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Low blood pressure and risk of dementia in the Kungsholmen project : a 6-year follow-up study
- 2003
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Ingår i: Archives of Neurology. - : American Medical Association. - 0003-9942 .- 1538-3687. ; 60:2, s. 223-228
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Tidskriftsartikel (refereegranskat)abstract
- Background: Previous studies have reported a higher prevalence of dementia in persons with low blood pressure.Objective: To examine whether low blood pressure is prospectively associated with the occurrence of Alzheimer disease and dementia in elderly people.Subjects and Methods: A community-based, dementia-free cohort (n = 1270) aged 75 to 101 years was longitudinally examined twice within 6 years to detect incident dementia using the Diagnostic and Statistical Manual of Mental Disorders, Revised Third Edition criteria. Cox proportional hazards models were used to analyze blood pressure in association with dementia after adjustment for several potential confounders.Results: During the 6-year period, 339 subjects were diagnosed with dementia, including 256 persons with Alzheimer disease. Subjects with very high systolic pressure (>180 vs 141-180 mm Hg) had an adjusted relative risk of 1.5 (95% confidence interval [CI], 1.0-2.3; P =.07) for Alzheimer disease, and 1.6 (95% CI, 1.1-2.2) for dementia. Low systolic pressure (</=140 mm Hg) was not related to incident dementia. In contrast, high diastolic pressure (>90 mm Hg) was not associated with dementia incidence, whereas extremely low diastolic pressure (</=65 vs 66-90 mm Hg) produced an adjusted relative risk of 1.7 (95% CI, 1.1-2.4) for Alzheimer disease and 1.5 (95% CI, 1.0-2.1; P =.03) for dementia. The latter association was pronounced particularly in persons who used antihypertensive drugs.Conclusions: Both low diastolic and high systolic pressure are associated with an increased risk of Alzheimer disease and dementia in this elderly population. The atherosclerotic process may explain the observed associations. In addition, low diastolic pressure may increase dementia risk by affecting cerebral perfusion.
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| 9. |
- Qiu, Chengxuan, et al.
(författare)
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Twenty-year changes in dementia occurrence suggest decreasing incidence in central Stockholm, Sweden
- 2013
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Ingår i: Neurology. - 0028-3878 .- 1526-632X. ; 80:20, s. 1888-1894
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Tidskriftsartikel (refereegranskat)abstract
- Objective: To explore whether prevalence, survival, and incidence of dementia have changed from 1987–1994 to 2001–2008 in Stockholm, Sweden.Methods: This study is based on 2 cross-sectional surveys of people aged 75 years or over conducted in central Stockholm: the Kungsholmen Project (KP) (1987–1989, n = 1,700) and the Swedish National study on Aging and Care in Kungsholmen (SNAC-K) (2001–2004, n = 1,575). In both surveys we diagnosed dementia according to DSM-III-R criteria, following the identical diagnostic procedure. Death certificates were used to determine survival status of KP participants as of December 1994 and SNAC-K participants as of June 2008. We used logistic and Cox models to compare prevalence and survival, controlling for major confounders. We inferred incidence of dementia according to its relationship with prevalence and survival.Results: At baseline, 225 subjects in KP and 298 in SNAC-K were diagnosed with dementia. The age- and sex-standardized prevalence of dementia was 17.5% (12.8% in men; 19.2% in women) in KP and 17.9% (10.8% in men; 20.5% in women) in SNAC-K. The adjusted odds ratio of dementia in SNAC-K vs KP was 1.17 (95% confidence interval 0.95–1.46). The multiadjusted hazard ratio of death in SNAC-K vs KP was 0.71 (0.57–0.88) in subjects with dementia, 0.68 (0.59–0.79) in those without dementia, and 0.66 (0.59–0.74) in all participants.Conclusions: Prevalence of dementia was stable from the late 1980s to the early 2000s in central Stockholm, Sweden, whereas survival of patients with dementia increased. These results suggest that incidence of dementia may have decreased during this period.
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| 10. |
- von Strauss, Eva, et al.
(författare)
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Aging and the occurrence of dementia : Findings From a Population-Based Cohort With a Large Sample of Nonagenarians
- 1999
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Ingår i: Archives of Neurology. - : American Medical Association. - 0003-9942 .- 1538-3687. ; 56:5, s. 587-592
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Tidskriftsartikel (refereegranskat)abstract
- Context In spite of numerous studies on the occurrence of dementia, many questions remain, such as the relation between age, aging, and dementing disorders. This question is relevant both for understanding the pathogenetic mechanism of the dementias and for the public health prospective because of the increasing number of 85-year-old or older persons in our population.Objective To estimate the occurrence of dementia in the very old, including nonagenarians, in relation to age, gender, and different dementia types.Design An epidemiological survey where all participants were clinically examined by physicians, assessed by psychologists, and interviewed by nurses. The Diagnostic and Statistical Manual of Mental Disorders, Revised Third Edition (DSM-III-R) criteria for dementia were followed. A category of "questionable dementia" was added when all criteria were not fulfilled. A double diagnostic procedure was used for all subjects.Setting Community-based population, including all inhabitants of 2 areas in central Stockholm, Sweden (N=1848).Participants Of the 1848 subjects in the study population, 168 (9.1%) had died and 56 (3%) moved before examination. Of the remaining subjects, 1424 (87.7%) were examined, and the refusal rate was 12.3%.Main Outcome Measures Age- and gender-specific prevalence figures, and gender- and education-adjusted odds ratios were used.Results At the end of the diagnostic procedure, 358 clinically definite cases of dementia and 101 questionable cases of dementia were identified. Alzheimer disease (AD) contributed to 76.5%, and vascular dementia (VaD) to 17.9%. The prevalence of dementia increases from 13% in the 77- to 84-year-old subjects to 48% among persons 95 years and older (from 18% to 61% when questionable cases were included). The odds ratio for subjects 90 to 94 years and 95 years and older in comparison with 77- to 84-year-old subjects was 3.7 (95% confidence interval [CI], 2.7-5.1) and 6.5 (95% CI, 3.9-10.8) for dementia, 4.8 (95% CI, 3.3-7.0) and 8.0 (95% CI, 4.6-14.0) for persons with AD, 2.3 (95% CI, 1.3-4.2) and 4.6 (95% CI, 1.9-11.2) for VaD, respectively.Conclusions Dementia prevalence continues to increase even in the most advanced ages. This increase is especially evident among women and is more clear for AD. We believe that our prevalence data reflect the differential distribution of dementia risk.
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