![]() Education as risk factor of Mild Cognitive Impairment - the role of the gut microbiome. Presentation in symposium: Social determinants of brain health: From the search for mechanisms to recommendations to increase equityKlee, Matthias ; Aho, Velma ; May, Patrick et alScientific Conference (2023, November) Detailed reference viewed: 115 (1 UL) Education as risk factor of Mild Cognitive Impairment - the role of the gut microbiomeKlee, Matthias ; Aho, Velma ; May, Patrick et alPoster (2023, July) Detailed reference viewed: 103 (4 UL) Socioeconomic Deprivation, Genetic Risk, and Incident DementiaKlee, Matthias ; Leist, Anja ; et alin American Journal of Preventive Medicine (2023) Detailed reference viewed: 155 (2 UL) Education as risk factor of Mild Cognitive Impairment - the role of the gut microbiome.Klee, Matthias ; Aho, Velma ; May, Patrick et alPoster (2023, January) Detailed reference viewed: 81 (2 UL) Country-level Variation of Dementia Prevalence in Europe - Comparing OECD and SHARE DataKlee, Matthias ; ; Leist, Anja ![]() Presentation (2022, July 07) Detailed reference viewed: 176 (9 UL) Individual factors and beliefs determining COVID-19 vaccination willingnessPauly, Laure ; Klee, Matthias ; Paccoud, Ivana et alPoster (2022, April) Background: High vaccination coverage rates are necessary to reduce infections and transmissions of the SARS-CoV-2 virus causing COVID-19 and to allow successful mitigation of the current pandemic. To ... [more ▼] Background: High vaccination coverage rates are necessary to reduce infections and transmissions of the SARS-CoV-2 virus causing COVID-19 and to allow successful mitigation of the current pandemic. To date, we are still lacking information to explain the hesitancy in Luxembourg towards uptake of the available COVID-19 vaccines. The present study explored motivations for and against vaccination in a population-representative sample of residents across Luxembourg to identify hesitant groups and develop strategies to increase population immunity against SARS-CoV-2. Methods: In the framework of the nationwide, representative longitudinal CON-VINCE study, a sample of 1589 respondents (49.6% women, 84.3% Luxembourg nationality) ranging from 18-84 years, participated in the survey in spring 2021. The protocol of the CON-VINCE study has been described in detail elsewhere (Snoeck et al. 2020). Results: 52% of the respondents had at least partial vaccination at time of assessment between April to June 2021. The most common reasons for vaccination of those willing to be vaccinated (81.2%) were altruistic motivations. Prevalent reasons against vaccination for those undecided (8.7%) or reluctant (10.2%) to be vaccinated were that the vaccine had not been tested sufficiently and the fear of long-term vaccine side effects. Only very few of the vaccination-hesitant or -reluctant respondents reported that they did not believe in vaccination in general. Conclusion: The present study identified motivations for and against COVID-19 vaccination and determined demographic and socio-economic factors associated with vaccination willingness. To increase vaccination rates, public health communication needs to target those unsure or unwilling to be vaccinated. We will continue to study the vaccination uptake in the Luxembourg population, as CON-VINCE is now part of the H2020-funded international ORCHESTRA project (https://orchestra-cohort.eu), research into comparing these results on a Pan-European level. [less ▲] Detailed reference viewed: 194 (19 UL) Mapping of machine learning approaches for description, prediction, and causal inference in the social and health sciencesLeist, Anja ; Klee, Matthias ; Kim, Jung Hyun et alin Science Advances (2022), 8 Machine learning (ML) methodology used in the social and health sciences needs to fit the intended research purposes of description, prediction, or causal inference. This paper provides a comprehensive ... [more ▼] Machine learning (ML) methodology used in the social and health sciences needs to fit the intended research purposes of description, prediction, or causal inference. This paper provides a comprehensive, systematic meta-mapping of research questions in the social and health sciences to appropriate ML approaches by incorporating the necessary requirements to statistical analysis in these disciplines. We map the established classification into description, prediction, counterfactual prediction, and causal structural learning to common research goals, such as estimating prevalence of adverse social or health outcomes, predicting the risk of an event, and identifying risk factors or causes of adverse outcomes, and explain common ML performance metrics. Such mapping may help to fully exploit the benefits of ML while considering domain-specific aspects relevant to the social and health sciences and hopefully contribute to the acceleration of the uptake of ML applications to advance both basic and applied social and health sciences research. [less ▲] Detailed reference viewed: 95 (4 UL) Which demographic and socio-economic factors are associated with vaccination willingness and beliefs towards vaccination? Rapid report with first resultsLeist, Anja ; Klee, Matthias ; Paccoud, Ivana et alReport (2021) In the framework of the CoVaLux project on vaccination and long COVID in Luxembourg, the project “Socio-economic determinants of long COVID and vaccination, and economic consequences with focus on labour ... [more ▼] In the framework of the CoVaLux project on vaccination and long COVID in Luxembourg, the project “Socio-economic determinants of long COVID and vaccination, and economic consequences with focus on labour market and health care” aims to triangulate evidence from different data sources such as social security and general population data, the national cohort CON-VINCE as well as national health surveys. We seek to arrive at robust assessments of how socio-economic determinants shape vaccination willingness, occurrence, severity and persistence of long COVID, and economic consequences of long COVID in Luxembourg. [less ▲] Detailed reference viewed: 410 (61 UL) Investigating the associations of trajectories of depressive symptoms and self-perceived health and incident dementia : an unsupervised machine learning approach.Klee, Matthias ; Leist, Anja ![]() Poster (2021, July) Background: Risk factors for dementia show inter-individually varying trajectories over the lifespan. However, risk factors have been mainly investigated with one time-point assessments. New research ... [more ▼] Background: Risk factors for dementia show inter-individually varying trajectories over the lifespan. However, risk factors have been mainly investigated with one time-point assessments. New research suggests that certain risk factor trajectories are associated with increased risk of adverse cognitive outcomes (Demnitz et al., 2020 [https://doi.org/10.1101/2020.05.20.20106963]; Singh-Manoux et al., 2018 [https://doi.org/10.1016/j.jalz.2017.06.2637]). However, it remains unclear how sequential and simultaneous changes of risk factors alter the individual risk for developing dementia. Testing the joint contribution of trajectories of depressive symptoms and self-perceived health on incidence of dementia, we hypothesized that consistently poor as well as deteriorating trajectories increase the risk for incident dementia, and explored possible interactions of the trajectories. Method: A total of 5,326 respondents to the SHARE survey, mean age 73.9 years, and 6 complete follow-ups spanning ~13 years, answered the EURO-D depression scale, self-perceived health (SPH) (t1-t5), and self-reported dementia diagnosis at last follow-up (t6). To investigate the predictive ability of distinct longitudinal trajectories, we applied unsupervised statistical learning methods (K-means cluster modelling). Clusters indicated distinct risk factor trajectories, which were used as exposures in stepwise logistic regressions to predict incident dementia, controlling for age, gender, education, and country. Result: Cluster analysis revealed five distinct trajectories each for SPH and EURO-D, with varying dementia incidence. In stepwise logistic regressions, respondents with trajectories “consistently poor health” and “consistently high depression” showed elevated risk of dementia (OR = 4.02 [1.39, 14.75] and OR = 2.26 [1.03, 4.95], respectively) compared to the combined baseline risk for “consistently low depression” and “consistently good health”. Interactions were not significant. However, respondents with the combination of “consistently high depression” and “consistently poor health” showed increased risk (N = 246; 6.1% dementia). Conclusion: Applying unsupervised machine learning is helpful to incorporate longitudinal information on depressive symptoms and self-perceived health and model these risk factors longitudinally to test their contribution to explain incidence of dementia. The predictive ability of the trajectories of depressive symptoms and self-perceived health for dementia indicates the potential for improving the identification of people at risk for developing dementia in late life by exploiting trajectory information readily accessible through regular medical check-ups in old age. [less ▲] Detailed reference viewed: 119 (6 UL) Machine learning in the social and health sciencesLeist, Anja ; Klee, Matthias ; Kim, Jung Hyun et alE-print/Working paper (2021) The uptake of machine learning (ML) approaches in the social and health sciences has been rather slow, and research using ML for social and health research questions remains fragmented. This may be due to ... [more ▼] The uptake of machine learning (ML) approaches in the social and health sciences has been rather slow, and research using ML for social and health research questions remains fragmented. This may be due to the separate development of research in the computational/data versus social and health sciences as well as a lack of accessible overviews and adequate training in ML techniques for non data science researchers. This paper provides a meta-mapping of research questions in the social and health sciences to appropriate ML approaches, by incorporating the necessary requirements to statistical analysis in these disciplines. We map the established classification into description, prediction, and causal inference to common research goals, such as estimating prevalence of adverse health or social outcomes, predicting the risk of an event, and identifying risk factors or causes of adverse outcomes. This meta-mapping aims at overcoming disciplinary barriers and starting a fluid dialogue between researchers from the social and health sciences and methodologically trained researchers. Such mapping may also help to fully exploit the benefits of ML while considering domain-specific aspects relevant to the social and health sciences, and hopefully contribute to the acceleration of the uptake of ML applications to advance both basic and applied social and health sciences research. [less ▲] Detailed reference viewed: 215 (16 UL) |
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