RESUMO
Many studies have shown that the number of new dementia diagnoses in Germany is increasing yearly. Thus, two social tasks are important: the adequate support and care of dementia patients, now and in the future, as well as covering the costs thereof. The survival period of dementia patients has a central meaning - especially for health policy planning. Therefore, the question of our 8-year follow-up study was whether living conditions affect the survival period of dementia patients? A total of 173 dementia outpatients (ICD-10 numbers F00 and F01) were screened for survival time and living conditions. For deceased patients, a close reference person was interviewed, and the exact date of death was recorded. For statistical evaluation, the Cox proportional hazard model was used and dying risks were determined. Our investigation shows that a clear difference exists in the survival period of dementia patients, according to whether they have lived at home or in a senior citizen's home. Patients in senior citizen's homes had a higher relative dying risk of around 53.1% (hazard ratio), than for those cared for at home (p=0.047). Prospective research is needed to gain more evidence about the impact of social factors, e.g., living conditions, on the survival time of demented patients.
Assuntos
Doença de Alzheimer/mortalidade , Demência Vascular/mortalidade , Instituição de Longa Permanência para Idosos/estatística & dados numéricos , Vida Independente , Casas de Saúde/estatística & dados numéricos , Idoso , Idoso de 80 Anos ou mais , Criança , Seguimentos , Alemanha , Serviços de Assistência Domiciliar/estatística & dados numéricos , Humanos , Lactente , Modelos de Riscos Proporcionais , Análise de SobrevidaRESUMO
Alzheimer's disease and vascular dementia still may be looked upon as distinct nosologic entities, representing the two main etiologic categories of senile dementia. However, rather recent findings suggest a comorbidity of neurodegenerative and ischemic pathology in a majority of dementia cases in later life. The effect of the vascular pathology on the survival time was studied in 173 dementia outpatients. For 147 patients with complete datasets, we were able to gain information concerning their survival time. As an indicator of cerebrovascular morbidity the 18-point ischemic scale of Hachinski (HIS) was correlated with the survival time. Thus, we did not use the HIS for its original purpose to differentiate between degenerative and vascular dementia, but to roughly evaluate the cerebrovascular impact in a continuum model. Using the Cox model we calculated mortality risks for every point on the HIS. We found a Cox hazard ratio of 1.038 for each supplementary point on the HIS, which equals a 3.8% higher relative mortality risk. The result misses significance (p=0.092), but indicates a clear tendency towards a shortening of survival time by vascular comorbidity. Future prospective studies should integrate brain imaging to further corroborate our findings.