Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Resultados 1 - 16 de 16
Filtrar
1.
Environ Res ; 233: 116485, 2023 09 15.
Artículo en Inglés | MEDLINE | ID: mdl-37352954

RESUMEN

The importance of the social environment and social inequalities in disease etiology is well-known due to the profound research and conceptual framework on social determinants of health. For a long period, in exposome research with its classical orientation towards detrimental health effects of biological, chemical, and physical exposures, this knowledge remained underrepresented. But currently it gains great awareness and calls for innovations in rethinking the role of social environmental health determinants. To fill this gap that exists in terms of the social domain within exposome research, we propose a novel conceptual framework of the Social Exposome, to integrate the social environment in conjunction with the physical environment into the exposome concept. The iterative development process of the Social Exposome was based on a systematic compilation of social exposures in order to achieve a holistic portrayal of the human social environment - including social, psychosocial, socioeconomic, sociodemographic, local, regional, and cultural aspects, at individual and contextual levels. In order to move the Social Exposome beyond a mere compilation of exposures, three core principles are emphasized that underly the interplay of the multitude of exposures: Multidimensionality, Reciprocity, and Timing and continuity. The key focus of the conceptual framework of the Social Exposome is on understanding the underlying mechanisms that translate social exposures into health outcomes. In particular, insights from research on health equity and environmental justice have been incorporated to uncover how social inequalities in health emerge, are maintained, and systematically drive health outcomes. Three transmission pathways are presented: Embodiment, Resilience and Susceptibility or Vulnerability, and Empowerment. The Social Exposome conceptual framework may serve as a strategic map for, both, research and intervention planning, aiming to further explore the impact of the complex social environment and to alter transmission pathways to minimize health risks and health inequalities and to foster equity in health.


Asunto(s)
Exposoma , Humanos , Salud Ambiental , Ambiente , Medio Social , Factores Socioeconómicos , Exposición a Riesgos Ambientales/análisis
2.
BMC Geriatr ; 22(1): 891, 2022 11 22.
Artículo en Inglés | MEDLINE | ID: mdl-36418996

RESUMEN

BACKGROUND: Physical and social neighbourhood characteristics can vary according to the neighbourhood socio-economic status (SES) and influence residents' perceptions, behaviours and health outcomes both positively and negatively. Neighbourhood SES has been shown to be predictive of mental health, which is relevant for healthy ageing and prevention of dementia or depression. Positive affectivity (PA) is an established indicator of mental health and might indicate a positive emotional response to neighbourhood characteristics. In this study, we focussed on the association of neighbourhood SES with PA among older residents in Germany and considered social integration and environmental perceptions in this association. METHODS: We used questionnaire-based data of the ongoing population-based Heinz Nixdorf Recall Study for our cross-sectional analysis, complemented by secondary data on social welfare rates in the neighbourhood of residents' address. PA was assessed using the Positive and Negative Affect Schedule (PANAS) in 2016. Linear regression models were performed to estimate the associations and adjusted for socio-demographic variables. RESULTS: Higher social welfare rates were associated with lower PA scores. The strongest negative association from the crude model (b = -1.916, 95%-CI [-2.997, -0.835]) was reduced after controlling for socio-demographic variables (b = -1.429, 95%-CI [-2.511, -0.346]). Social integration factors (b = -1.199, 95%-CI [-2.276, -0.121]) and perceived environmental factors (b = -0.875, 95%-CI [-1.971, 0.221]) additionally diminished the association of social welfare rates with PA in the full model (b = -0.945, 95%-CI [-2.037, 0.147]). CONCLUSION: Our results suggest that neighbourhoods have an influence on the occurrence and the extent of PA. Public health interventions that address socio-economic disadvantage in the neighbourhood environment could be an effective and far-reaching way to reduce the risk of depression and depressive symptoms due to low PA in older residents.


Asunto(s)
Estatus Económico , Clase Social , Humanos , Anciano , Estudios Transversales , Alemania/epidemiología , Recuerdo Mental
3.
Eur J Public Health ; 29(2): 377-379, 2019 04 01.
Artículo en Inglés | MEDLINE | ID: mdl-30052879

RESUMEN

Noise annoyance may reflect a pro-participatory attitude towards public information and consultation according to the European Environmental Noise Directive. However, noise annoyance is also indicative of a stress response to perceived uncontrollable noise exposure. Using cross-sectional data on a sample of elderly citizens (n = 1772), we investigated whether the value residents ascribed to being able to control noise exposure at home moderated the potential indirect effect of road traffic noise on annoyance through perceived noise control. Our results confirmed the presence of such a moderated mediation, which may justify studying the impact of residents' valuing perceived noise control on participation readiness.


Asunto(s)
Ruido del Transporte/estadística & datos numéricos , Percepción , Población Urbana/estadística & datos numéricos , Factores de Edad , Anciano , Estudios Transversales , Femenino , Alemania , Humanos , Masculino , Ruido del Transporte/efectos adversos , Ruido del Transporte/prevención & control , Factores Sexuales , Factores Socioeconómicos
4.
Eur J Public Health ; 27(6): 1021-1026, 2017 12 01.
Artículo en Inglés | MEDLINE | ID: mdl-29186459

RESUMEN

Background: Little is yet known on the long-term effects of stress management interventions (SMIs) in the workplace. The aim this study was to prospectively examine the effect of an improvement of psychosocial working conditions measured by the Effort-Reward (E-R) Imbalance model within 2 years following an SMI, and mental health 7 years later. Methods: The study sample consisted of 97 male industrial workers from southern Germany. Data were collected pre- and post-intervention in 2006 (T1) and 2008 (T2), respectively, as well as in 2015 (T3). Change scores were computed by subtracting T1 from T3 values. The associations between E-R ratio at T1, T2 and the change score, respectively, with depression and anxiety 7 years later were estimated by means of linear regression analysis. Analyses were adjusted for baseline levels of the exposure and outcome variables, socio-demographic-, health- and work-related covariates. Results: Within-person comparisons revealed a significant reduction (i.e. improvement) in E-R ratio post-intervention (-0.103, SD 0.24, P = 0.000). This improvement in the E-R ratio was significantly associated with lower anxiety (ß = 0.358, P = 0.001) and depression (ß = 0.246, P = 0.031) scores in the fully adjusted models. The association between change scores and mental health were slightly stronger than associations with absolute values at T1 and T2. Conclusions: An improvement in E-R ratio following an SMI, was significantly associated with lower anxiety and depression 7 years later. These results strongly support the importance of improving psychosocial working conditions in order to protect the mental health of employees in the long-run.


Asunto(s)
Salud Mental/estadística & datos numéricos , Estrés Laboral/prevención & control , Adulto , Ansiedad/epidemiología , Ansiedad/prevención & control , Depresión/epidemiología , Depresión/prevención & control , Alemania/epidemiología , Humanos , Modelos Lineales , Masculino , Persona de Mediana Edad , Estrés Laboral/epidemiología , Estudios Prospectivos , Encuestas y Cuestionarios , Lugar de Trabajo/psicología
5.
J Clin Med ; 13(16)2024 Aug 19.
Artículo en Inglés | MEDLINE | ID: mdl-39201030

RESUMEN

Background: Before surgical or transcatheter aortic valve implantation (TAVI), coronary status evaluation is required. The role of combined computed coronary tomography angiography (cCTA) and TAVI planning CT in this context is not yet well elucidated. This study assessed whether relevant proximal coronary disease requiring coronary revascularization can be safely detected by combined cCTA and TAVI planning CT, including CT-derived fractional flow reserve (FFR) calculation in patients with severe aortic stenosis. Methods: This study analyzed patients with successful cCTA combined with TAVI planning CT using a 128-slice dual-source scanner. The detection via cCTA of relevant left main stem stenosis (>50%) or proximal coronary artery stenosis (>70%) was compared to invasive coronary angiography (ICA). Results: This study comprised 101 consecutive TAVI patients with a median age of 83 [77-86] years, a median STS score of 3.7 [2.4-6.1] and 54% of whom had known coronary artery disease. Of 15 patients with relevant coronary stenoses, 14 (93.3%) were detected with cCTA, while false positive results were found in 25 patients. Only in patients with previous percutaneous coronary stent implantation (PCI) were false positive rates (11/29) increased. In the subgroup without previous PCI, an improved classification performance of 87.5%, being mainly due to 11.1% false positive classifications, led to a negative predictive value of 98.5%. Conclusions: Combined cCTA and CT-FFR with TAVI planning CT via state-of-the-art scanners and protocols as a one-stop shop can replace routine ICA in patients prior to TAVI due to its safe detection of relevant coronary artery stenosis, although diagnostic performance of cCTA is only reduced in patients with coronary stents.

7.
BMC Public Health ; 12: 810, 2012 Sep 20.
Artículo en Inglés | MEDLINE | ID: mdl-22994885

RESUMEN

BACKGROUND: Until now, insomnia has not been much of interest in epidemiological neighbourhood studies, although literature provides evidence enough for insomnia-related mechanisms being potentially dependent on neighbourhood contexts. Besides, studies have shown differences in sleep along individual social characteristics that might render residents more vulnerable to neighbourhood contextual exposures. Given the role of exposure duration and changes in the relationship between neighbourhoods and health, we studied associations of neighbourhood unemployment and months under residential turnover with insomnia by covering ten years of residential history of nearly 3,000 urban residents in the Ruhr Area, Germany. METHODS: Individual data were retrieved from the Heinz Nixdorf Recall Study, a population-based study of randomly chosen participants from adjacent cities, which contains self-rated insomnia symptoms and individual social characteristics. Participants' residential addresses were retrospectively assessed using public registries. We built individually derived exposure measures informing about mean neighbourhood unemployment rates and months under high residential turnover. These measures were major predictors in multivariate logistic regressions modelling the association between social neighbourhood characteristics and insomnia in the whole sample and subgroups defined by low income, low education, social isolation, and change of residence. Traffic-related noise, age, gender, economic activity, and education were considered as covariates. RESULTS: Nearly 12 per cent of the participants complained about insomnia. Associations of neighbourhood unemployment with insomnia were more consistent than those of residential turnover in the whole sample (adjusted OR 1.42, 95% CI 1.00-2.03 for neighbourhood unemployment and OR 1.33, 95% CI 0.78-2.25 for residential turnover in the highest exposure categories). In low-income and socially isolated participants, neighbourhood unemployment odds of reporting insomnia were particularly elevated (adjusted OR 2.90, 95% CI 1.39-6.02 and OR 3.32, 95% CI 1.11-9.96, respectively). Less educated participants displayed relatively high odds of reporting insomnia throughout all upper neighbourhood unemployment exposure categories. Change of residence weakened associations, whereas undisrupted exposure sharpened them by trend. CONCLUSIONS: Our findings hint at multiple stressors being effective in both the neighbourhood context and individual resident, possibly reflecting precarious life situations undermining residents' sleep and health chances. Moreover, our results suggest a temporal dependency in the association between neighbourhood and insomnia.


Asunto(s)
Dinámica Poblacional/estadística & datos numéricos , Características de la Residencia/estadística & datos numéricos , Trastornos del Inicio y del Mantenimiento del Sueño/epidemiología , Desempleo/estadística & datos numéricos , Salud Urbana/estadística & datos numéricos , Anciano , Femenino , Alemania/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Riesgo , Factores Socioeconómicos , Factores de Tiempo
8.
Ind Health ; 58(1): 72-77, 2020 Feb 04.
Artículo en Inglés | MEDLINE | ID: mdl-31155520

RESUMEN

Cognitive health is a key resource for individuals to nurture their employability. We studied the longitudinal association of cognitive function with changes in stressful working conditions, testing a possible reversed causation. We used a sample of employees (N=1,355) participating in two surveys (2006 and 2011) within a German national representative study (GSOEP). Cognitive function was captured by perceptual speed (Symbol Digit Test) and word fluency (Animal Naming Test). Stressful working conditions were measured by the validated short version of the effort-reward imbalance questionnaire. Multivariate linear regression models assessed the impact of perceptual speed and verbal fluency in 2006 on changes in participants' perceptions of effort, reward, effort-reward ratio, and over-commitment between 2006 and 2011, adjusting for socio-demography, behaviours, physical and mental health at baseline. Neither perceptual speed nor verbal fluency was significantly related to changes in perceived working conditions. Our findings did not support the notion of reversed causation.


Asunto(s)
Cognición , Estrés Laboral/psicología , Estrés Psicológico , Lugar de Trabajo/psicología , Adulto , Femenino , Alemania , Humanos , Modelos Lineales , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Recompensa , Encuestas y Cuestionarios
9.
Artículo en Inglés | MEDLINE | ID: mdl-29401657

RESUMEN

The reduction of stress reactivity resulting from stress management interventions prevents disorders and improves mental health, however, its long-term sustainability has been little examined. The objective of this study was, therefore, to determine the effectiveness of a stress management intervention, designed to improve stress reactivity, for mental health and sleep problems seven years later, using longitudinal data from 101 male industrial workers. Linear regressions estimated the adjusted effects of the changes in stress reactivity in general as well as in its six subdimensions (work overload, social conflict, social stress, failure at work, and anticipatory and prolonged reactivity) on depression, anxiety, and sleep problems seven years later. The improvement of the prolonged reactivity had positive effects on depression, anxiety, and sleep problems (unstandardized regression coefficients [Bs] ≥ 0.35, all p-values ≤ 0.01). Depression and sleep problems were further improved by a reduction of the reactivity to social conflicts (Bs ≥ 0.29, p-values < 0.05), and an improvement in the overall reactivity score positively influenced sleep problems (B = 0.07, p = 0.017). In conclusion, the improvement of stress reactivity resulting from a work stress intervention was effective and generally long-lasting in preventing mental health and sleep problems. The reduction of the prolonged reactivity seems of particular importance and efficient in inhibiting negative stress manifestations.


Asunto(s)
Salud Mental , Educación del Paciente como Asunto/organización & administración , Trastornos del Sueño-Vigilia/terapia , Estrés Psicológico/terapia , Lugar de Trabajo/psicología , Adolescente , Adulto , Anciano , Ansiedad/psicología , Ansiedad/terapia , Depresión/psicología , Depresión/terapia , Femenino , Humanos , Masculino , Persona de Mediana Edad , Salud Laboral , Estrés Laboral , Percepción , Trastornos del Sueño-Vigilia/psicología , Estrés Psicológico/psicología , Encuestas y Cuestionarios , Carga de Trabajo/psicología , Adulto Joven
10.
Artículo en Inglés | MEDLINE | ID: mdl-29883438

RESUMEN

Urban residents’ need to be in control of their home environment can be constrained by perceived uncontrollability of exposure to road traffic noise. Noise annoyance may indicate a psychological stress reaction due to this uncontrollability perception, thereby undermining the restoration process. Environmental resources, such as having access to a quiet side at home and dwelling-related green, may reduce noise annoyance both directly by shielding acoustically and indirectly by enhancing residents’ perceived noise control. We assessed the potential mediating role of perceived noise control in independent and joint associations of road traffic noise exposure (>65 dB Lden) and of an absent dwelling-related environmental resource (three indicators concerning quiet sides and one indicator concerning dwelling-related green) with noise annoyance. In our cross-sectional, questionnaire-based study on elderly urban citizens (N = 1812), we observed a statistically significant indirect effect of noise exposure on noise annoyance through perceived noise control (39%, 95%CI 26⁻55%). Statistical mediation between indicators of absent environmental resources and noise annoyance was weaker. The potential indirect effect was confirmed for combinations of noise exposure with each of the four indicators of an absent environmental resource. Our findings may call for mitigating noise levels while fostering quietness and green at residents’ homes.


Asunto(s)
Exposición a Riesgos Ambientales , Vivienda , Ruido del Transporte , Anciano , Anciano de 80 o más Años , Estudios Transversales , Femenino , Humanos , Genio Irritable , Masculino , Persona de Mediana Edad , Percepción , Encuestas y Cuestionarios
11.
BMJ Open ; 7(1): e012815, 2017 01 23.
Artículo en Inglés | MEDLINE | ID: mdl-28115332

RESUMEN

BACKGROUND: Current economic and social change has contributed to increasing job insecurity and traffic-related pollution in residential areas. Both job insecurity and exposure to noise and air pollution are known determinants of population health and can concur in peoples' lives. This may hold true particularly for socially disadvantaged subpopulations. Nevertheless, the potential independent and joint links of those exposures to health have been rarely examined so far. We aimed to contribute to the scarce body of evidence. METHODS: Information on perceived job insecurity and exposures to noise and air pollution as expressed by annoyance as well as on self-rated health were gathered from 2 waves of the population-based German Socio-Economic Panel (2009 and 2011, N=6544). We performed multivariable Poisson regression to examine the independent and joint risk of poor health in 2011 by perceived job insecurity and annoyance due to noise and air pollution in 2009. RESULTS: After the 2-year follow-up in 2011, 571 (8.7%) participants rated their health as poor. The risk of reporting incident poor health was increased by roughly 40% in employees reporting high versus low perceived job insecurity and annoyance due to noise and air pollution, respectively. This risk increased when both exposures were present at higher levels (risk ratio=1.95 (1.49 to 2.55)). CONCLUSIONS: Work-related and environmental exposures may accumulate and have a joint health impact. Elaboration on the link between occupational and residential exposures is warranted in the light of their concurrence and their implications for health inequities.


Asunto(s)
Contaminación del Aire/estadística & datos numéricos , Ira , Estado de Salud , Ruido/efectos adversos , Desempleo/psicología , Adulto , Estudios de Cohortes , Exposición a Riesgos Ambientales/efectos adversos , Exposición a Riesgos Ambientales/estadística & datos numéricos , Femenino , Alemania , Humanos , Masculino , Exposición Profesional/efectos adversos , Exposición Profesional/estadística & datos numéricos , Percepción , Estudios Prospectivos , Factores de Riesgo , Autoinforme
12.
Artículo en Inglés | MEDLINE | ID: mdl-29140258

RESUMEN

It has been suggested that work characteristics, such as mental demands, job control, and occupational complexity, are prospectively related to cognitive function. However, current evidence on links between psychosocial working conditions and cognitive change over time is inconsistent. In this study, we applied the effort-reward imbalance model that allows to build on previous research on mental demands and to introduce reward-based learning as a principle with beneficial effect on cognitive function. We aimed to investigate whether high effort, high reward, and low over-commitment in 2006 were associated with positive changes in cognitive function in terms of perceptual speed and word fluency (2006-2012), and whether the co-manifestation of high effort and high reward would yield the strongest association. To this end, we used data on 1031 employees who participated in a large and representative study. Multivariate linear regression analyses supported our main hypotheses (separate and combined effects of effort and reward), particularly on changes in perceptual speed, whereas the effects of over-commitment did not reach the level of statistical significance. Our findings extend available knowledge by examining the course of cognitive function over time. If corroborated by further evidence, organization-based measures in the workplace can enrich efforts towards preventing cognitive decline in ageing workforces.


Asunto(s)
Cognición , Estrés Laboral/psicología , Recompensa , Lugar de Trabajo/psicología , Adulto , Femenino , Humanos , Modelos Lineales , Masculino , Persona de Mediana Edad , Análisis Multivariante , Factores Socioeconómicos , Encuestas y Cuestionarios , Compromiso Laboral
13.
Artículo en Inglés | MEDLINE | ID: mdl-28556813

RESUMEN

The Environmental Noise Directive expects residents to be actively involved in localising and selecting noise abatement interventions during the noise action planning process. Its intervention impact is meant to be homogeneous across population groups. Against the background of social heterogeneity and environmental disparities, however, the impact of noise action planning on exposure to traffic-related noise and its health effects is unlikely to follow homogenous distributions. Until now, there has been no study evaluating the impact of noise action measures on the social distribution of traffic-related noise exposure and health outcomes. We develop a conceptual (logic) model on cognitive-motivational determinants of residents' civic engagement and health (inequities) by integrating arguments from the Model on household's Vulnerability to the local Environment, the learned helplessness model in environmental psychology, the Cognitive Activation Theory of Stress, and the reserve capacity model. Specifically, we derive four hypothetical patterns of cognitive-motivational determinants yielding different levels of sustained physiological activation and expectancies of civic engagement. These patterns may help us understand why health inequities arise in the context of noise action planning and learn how to transform noise action planning into an instrument conducive to health equity. While building on existing frameworks, our conceptual model will be tested empirically in the next stage of our research process.


Asunto(s)
Participación de la Comunidad , Modelos Teóricos , Ruido del Transporte/prevención & control , Cognición , Disparidades en el Estado de Salud , Humanos , Motivación , Estrés Psicológico
14.
Biomed Res Int ; 2017: 2853813, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-29181392

RESUMEN

OBJECTIVE: Short- and medium-term effectiveness (up to 3 years) of individual level stress management interventions (SMI) at work were demonstrated, yet long-term effectiveness remains unexplored. We therefore aimed to address this research gap. METHODS: 94 male middle managers participated in a randomized wait-list controlled trial between 2006 and 2008 and in a post-trial-follow-up survey in 2015. During the first two years, all received an 18-hour psychotherapeutic SMI intervention which was based on the Effort-Reward Imbalance (ERI) model: tackling stressor on mismatch between effort and reward and promoting recovery on overcommitment. Work stress (i.e., ERI indicators) was the primary outcome, and the secondary outcome was depressive symptoms. The long-term effectiveness of the SMI was examined by mixed modeling, using an external control group (n = 94). RESULTS: Effort and reward were substantially improved with significant intervention ⁎ time interaction effects (p < 0.001) compared to the external control group; effects on overcommitment and depressive symptoms were also significant (p < 0.05 and p < 0.01, resp.), though their trajectories in the intervention group were less sustainable. CONCLUSIONS: The effectiveness of this psychotherapeutic SMI at work based on the ERI model was observed over a 9-year period, particularly on the effort-reward ratio.


Asunto(s)
Depresión/prevención & control , Modelos Psicológicos , Psicoterapia , Estrés Fisiológico , Adolescente , Adulto , Anciano , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad
15.
J Occup Environ Med ; 57(5): 552-61, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25689724

RESUMEN

OBJECTIVE: To investigate whether aging employees' selection, optimization, and compensation (SOC) strategies were associated with work ability over and above job demand and control variables, as well as across professions. METHODS: Multivariable linear regressions were conducted using a representative sample of German employees born in 1959 and 1965 (N = 6057). RESULTS: SOC was assessed to have an independent effect on work ability. Associations of job demands and control variables with work ability were more prominent. The SOC tended to enhance the positive association between decision authority and work ability. CONCLUSIONS: Individual strategies of selection, optimization, and compensation could be considered as psychosocial resources adding up to a better work ability and complement prevention programs. Workplace interventions should deal with job demands and control to maintain older employees' work ability in times of working population shrinkage.


Asunto(s)
Salud Laboral , Administración de Personal/métodos , Factores de Edad , Estudios Transversales , Femenino , Alemania , Humanos , Satisfacción en el Trabajo , Modelos Lineales , Masculino , Persona de Mediana Edad , Modelos Organizacionales , Modelos Psicológicos , Delegación al Personal , Selección de Personal , Estudios Prospectivos , Desarrollo de Personal , Evaluación de Capacidad de Trabajo , Indemnización para Trabajadores , Carga de Trabajo
16.
J Occup Environ Med ; 57(11): 1222-7, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26539771

RESUMEN

OBJECTIVE: To examine the main and interactive effects of effort-reward imbalance (ERI) and selection, optimization, and compensation (SOC) strategy on depressive symptoms among the working population in the City of Kumning, China. METHODS: We assessed the separate and combined effects of low versus high ERI and good versus poor SOC strategy on depressive symptoms using multivariable logistic regression analyses in a population-based sample (N = 2457). RESULTS: High ERI and poor SOC were significantly associated with depressive symptoms, respectively. In employees with both high ERI and poor SOC, the odds ratio was highly elevated as compared with the reference group (low ERI and good SOC). CONCLUSIONS: If our findings are confirmed by prospective studies, health promotion programs in work settings might consider SOC as an integral part to mitigate the adverse mental health effects of ERI.


Asunto(s)
Depresión/psicología , Satisfacción en el Trabajo , Enfermedades Profesionales/psicología , Recompensa , Adulto , China , Estudios Transversales , Femenino , Encuestas Epidemiológicas , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Modelos Psicológicos , Autoinforme
SELECCIÓN DE REFERENCIAS
Detalles de la búsqueda