While the prevalence, comorbidity, risk profile and health care utilization for late-life depression have been described for many Western countries, much less is known about the recent epidemiology of late-life depression in East Asian countries such as Korea. We investigated predictors for depressive symptoms and the association between depressive symptoms and the utilization of both medical care and preventive services in elderly Koreans. Data were obtained from a nationally representative sample of Koreans aged 60 and above (2226 men, 2911 women) who participated in the 2008 wave of the Korean Longitudinal Study of Ageing. Depressive symptoms were measured using the 10-item Center for Epidemiological Studies-Depression scale. Risk factors considered included sociodemographics, health behaviors, chronic diseases, and physical function. Health care utilization factors included hospitalization, outpatient clinic use and basic medical checkup. Being female, being unmarried, and having less education, lower household income, physical inactivity and lower weight were associated with depressive symptoms. Presence of chronic diseases and limited physical function also showed a significant association with depressive symptoms. Depressive symptoms were associated with increased odds of hospitalization and outpatient visits, but decreased the odds of utilization of basic medical checkup after controlling for potential confounders. Findings on most risk factors, except lower weight, were consistent with reports from Western countries. It is important to recognize the burden of depressive symptoms in the elderly. The interaction of such symptoms with chronic diseases should be acknowledged and considered in the clinical setting as well as in health care planning and policymaking.
[Show abstract][Hide abstract] ABSTRACT: Microsized TiO2 activated by high-energy ball milling was used as starting material to synthesize spinel Li4Ti5O12 by a conventional solid-state method. The effects of TiO2 particle size on the structure, morphology and electrochemical performance of Li4Ti5O12 were characterized by X-ray diffraction, scanning electron microscopy, Raman spectroscopy, and electrochemical tests. The results indicate that the particle size and degree of crystallinity of TiO2 are significantly reduced by the mechanical activation of high-energy ball milling. The crystalline structure and morphology of Li4Ti5O12 highly depend on the properties of TiO2. The optimal Li4Ti5O12 sample exhibits a high rate capability of about 103.9 mAh/g at 10C rate and excellent cyclability at 1C rate, which could be ascribed to the smaller particle size and higher lithium-ion diffusion coefficient. Therefore, the microsized TiO2 activated by high-energy ball milling is suitable for the economic synthesis of Li4Ti5O12.
[Show abstract][Hide abstract] ABSTRACT: Objective:
To estimate the prevalence of depressive symptoms among institutionalized elderly individuals and to analyze factors associated with this condition.
This was a cross-sectional study involving 462 individuals aged 60 or older, residents in long stay institutions in four Brazilian municipalities. The dependent variable was assessed using the 15-item Geriatric Depression Scale. Poisson's regression was used to evaluate associations with co-variables. We investigated which variables were most relevant in terms of presence of depressive symptoms within the studied context through factor analysis.
Prevalence of depressive symptoms was 48.7%. The variables associated with depressive symptoms were: regular/bad/very bad self-rated health; comorbidities; hospitalizations; and lack of friends in the institution. Five components accounted for 49.2% of total variance of the sample: functioning, social support, sensory deficiency, institutionalization and health conditions. In the factor analysis, functionality and social support were the components which explained a large part of observed variance.
A high prevalence of depressive symptoms, with significant variation in distribution, was observed. Such results emphasize the importance of health conditions and functioning for institutionalized older individuals developing depression. They also point to the importance of providing opportunities for interaction among institutionalized individuals.
Revista de Saúde Pública 04/2014; 48(2):216-224. DOI:10.1590/S0034-8910.2014048004965 · 0.73 Impact Factor
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