Dirk Keidel

ORCID: 0000-0003-4706-5728
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About
Contact & Profiles
Research Areas
  • Air Quality and Health Impacts
  • Chronic Obstructive Pulmonary Disease (COPD) Research
  • Noise Effects and Management
  • Climate Change and Health Impacts
  • Asthma and respiratory diseases
  • Air Quality Monitoring and Forecasting
  • COVID-19 and Mental Health
  • Health disparities and outcomes
  • SARS-CoV-2 and COVID-19 Research
  • Vehicle emissions and performance
  • COVID-19 epidemiological studies
  • COVID-19 Clinical Research Studies
  • Respiratory Support and Mechanisms
  • Occupational and environmental lung diseases
  • Urban Green Space and Health
  • Vaccine Coverage and Hesitancy
  • Cancer-related molecular mechanisms research
  • Physical Activity and Health
  • Occupational exposure and asthma
  • Genetic Associations and Epidemiology
  • COVID-19 Digital Contact Tracing
  • Pulmonary Hypertension Research and Treatments
  • Misinformation and Its Impacts
  • Korean Urban and Social Studies
  • COVID-19 and healthcare impacts

University of Basel
2015-2024

Swiss Tropical and Public Health Institute
2015-2024

Swiss School of Public Health
2023

Service de la Santé Publique
2023

University of Bern
2023

Society of Thoracic Surgeons
2015

Institute of Social and Preventive Medicine
2006-2009

University of Washington
2006

Land Use Regression (LUR) models have been used increasingly for modeling small-scale spatial variation in air pollution concentrations and estimating individual exposure participants of cohort studies. Within the ESCAPE project, PM(2.5), PM(2.5) absorbance, PM(10), PM(coarse) were measured 20 European study areas at sites per area. GIS-derived predictor variables (e.g., traffic intensity, population, land-use) evaluated to model annual average each The median explained variance (R(2)) was...

10.1021/es301948k article EN Environmental Science & Technology 2012-09-10

Air pollution has been associated with impaired health, including reduced lung function in adults. Moving to cleaner areas shown attenuate adverse effects of air on children but not adults.We conducted a prospective study 9651 adults (18 60 years age) randomly selected from population registries 1990 and assessed 1991, 8047 participants reassessed 2002. There was complete information volumes flows (e.g., forced vital capacity [FVC], expiratory volume 1 second [FEV1], FEV1 as percentage FVC,...

10.1056/nejmoa073625 article EN New England Journal of Medicine 2007-12-05

There is some evidence for an association between traffic noise and ischemic heart disease; however, associations with blood pressure have been inconsistent, little known about health effects of railway noise.We aimed to investigate the exposure on pressure; a secondary aim was address potentially susceptible subpopulations.We performed adjusted linear regression analyses using data from 6,450 participants second survey Swiss Study Air Pollution Lung Disease in Adults (SAPALDIA 2) estimate...

10.1289/ehp.1103448 article EN public-domain Environmental Health Perspectives 2011-09-01

Rationale: There is limited evidence from population-based studies demonstrating incidence of spirometric-defined chronic obstructive pulmonary disease (COPD) in association with occupational exposures.Objectives: We evaluated the between exposures and COPD Swiss Cohort Study on Air Pollution Lung Heart Diseases Adults (SAPALDIA).Measurements Main Results: Prebronchodilator ratio forced expiratory volume 1 second over vital capacity (FEV1/FVC) was measured 4,267 nonasthmatic SAPALDIA...

10.1164/rccm.201110-1917oc article EN American Journal of Respiratory and Critical Care Medicine 2012-04-08

<h3>Abstract</h3> Recurrent cortical network dynamics plays a crucial role for sequential information processing in the brain. While theoretical framework of reservoir computing provides conceptual basis understanding recurrent neural computation, it often requires manual adjustments global parameters, particular spectral radius synaptic weight matrix. Being mathematical and relatively complex quantity, is not readily accessible to biological networks, which generally adhere principle that...

10.1136/thx.2008.110031 article EN Thorax 2009-04-08

Land Use Regression (LUR) is a popular method to explain and predict spatial contrasts in air pollution concentrations, but LUR models for ultrafine particles, such as particle number concentration (PNC) are especially scarce. Moreover, no have been previously presented the lung deposited surface area (LDSA) of particles. The additional value metrics has not well investigated due lack exposure measurements models.Air were performed 2011 2012 eight areas Swiss SAPALDIA study at up 40 sites...

10.1186/s12940-016-0137-9 article EN cc-by Environmental Health 2016-04-18

The Swiss Cohort Study on Air Pollution and Lung Diseases in Adults (SAPALDIA), conducted 1991 (SAPALDIA 1) eight areas among 9,651 randomly selected adults aged 18-60 years, reported associations the prevalence of respiratory symptoms, nitrogen dioxide, particles with an aerodynamic diameter less than 10 microg/m3. Later, 8,047 subjects reenrolled 2002 2). effects individually assigned traffic exposures symptoms were estimated, while controlling for socioeconomic exposure- health-related...

10.1093/aje/kwj338 article EN American Journal of Epidemiology 2006-10-10

Reductions in mortality following improvements air quality were documented by several studies, and our group found, an earlier analysis, that decreasing particulate levels attenuate lung function decline adults.We investigated whether decreases particulates with aerodynamic diameter of less than 10 microm (PM10) associated lower rates reporting respiratory symptoms (i.e., decreased morbidity) on follow-up.The present analysis includes 7,019 subjects who underwent detailed baseline...

10.1164/rccm.200803-388oc article EN American Journal of Respiratory and Critical Care Medicine 2009-01-16

Subclinical atherosclerosis has been associated with long-term exposure to particulate matter (PM), but the relevance of particle size and sources remains unclear.We investigated association PM10 (≤ 10 μm), PM2.5 2.5 μm: total mass, vehicular, crustal sources), ultrafine particles [UFP < 0.1 number concentration (PNC) lung-deposited surface area (LDSA)] carotid intima-media thickness (CIMT).We used data from 1,503 participants ≥ 50 years old who participated in third examination Swiss...

10.1289/ehp161 article EN public-domain Environmental Health Perspectives 2016-06-03

The restrictive spirometric pattern is associated with a substantial morbidity and mortality burden. We sought to determine what extent restriction impaired quality of life. used data from two large population-based European cohorts: 6698 Community Respiratory Health Survey (ECRHS) 6069 Swiss Cohort Study on Air Pollution Lung Heart Diseases in Adults (SAPALDIA) adult participants. was defined as forced expiratory volume 1 s (FEV )/forced vital capacity (FVC) ≥lower limit normal (LLN) FVC...

10.1183/13993003.02096-2016 article EN European Respiratory Journal 2017-05-01

Although the dispersion model approach has been used in some epidemiologic studies to examine health effects of traffic-specific air pollution, no study evaluated predictions vigorously.We total and particulate matter < 10 2.5 microm aero-dynamic diameter (PM(10), PM(2.5)), nitrogren dioxide, nitrogen oxide concentrations predicted by Gaussian models against fixed-site measurements at different locations, including traffic-impacted, urban-background, alpine settings between across cities....

10.1289/ehp.10177 article EN public-domain Environmental Health Perspectives 2007-08-13

Ambient air pollution is a leading environmental risk factor and its broad spectrum of adverse health effects includes decrease in lung function. Socioeconomic status (SES) known to be associated with both exposure respiratory This study assesses the role SES either as confounder or effect modifier association between ambient Cross-sectional data from three European multicenter adult cohorts were pooled assess factors function, including annual means home outdoor NO2. Pre-bronchodilator...

10.3390/ijerph16111901 article EN International Journal of Environmental Research and Public Health 2019-05-29

Objectives: To describe the rationale, organization, and procedures of Corona Immunitas Digital Follow-Up (CI-DFU) eCohort to characterize participants at baseline. Methods: Participants Immunitas, a population-based nationwide SARS-CoV-2 seroprevalence study in Switzerland, were invited join CI-DFU 11 centres. Weekly online questonnaires cover health status changes, prevention measures adherence, social impacts. Monthly questionnaires additional contact tracing apps use, vaccination vaccine...

10.3389/ijph.2022.1604506 article EN cc-by International Journal of Public Health 2022-02-28
Anja Frei Marco Kaufmann Rebecca Amati Audrey Butty Dettwiler Viktor von Wyl and 95 more Anna Maria Annoni Julia Vincentini Céline Pellaton Giuseppe Pantaleo Jan Fehr Valérie D’Acremont Murielle Bochud Emiliano Albanese Milo A. Puhan Emiliano Albanese Rebecca Amati Antonio Amendola A Anagnostopoulos Daniela Anker Anna Maria Annoni Hélène E. Aschmann Andrew S. Azman Antoine Bal Tala Ballouz Hélène Baysson Kleona Bezani Annette Blattmann Patrick Bleich Murielle Bochud Patrick Bodenmann Gaëlle Bryand Rumley Peter Buttaroni Audrey Butty Dettwiler Anne-Linda Camerini Arnaud Chioléro Patricia Chocano-Bedoya Prune Collombet Laurie Corna Luca Crivelli Stéphane Cullati Valérie D’Acremont Diana Sofia Da Costa Santos Agathe Deschamps Paola D’Ippolito Anja Domenghino Richard Dubos Roxane Dumont Olivier Duperrex Julien Dupraz Malik Egger Emna El-May Nacira El Merjani Nathalie Engler Adina Mihaela Epure Lukas Erksam Sandrine Estoppey Marta Fadda Vincent Faivre Jan Fehr Andrea Felappi Maddalena Fiordelli Antoine Flahault Luc Fornerod Cristina Fragoso Corti Natalie Francioli Marion Frangville Irène Frank Giovanni Franscella Anja Frei Marco Geigges Semira Gonseth Clément Graindorge Idris Guessous E Harju Séverine Harnal Medea Imboden Emilie Jendly Ayoung Jeong Christian R. Kahlert Laurent Kaiser Marco Kaufmann Marco Kaufmann Dirk Keidel Simone Kessler Philipp Köhler Christine Krähenbühl Susi Kriemler Julien Lamour Sara Levati Pierre Lescuyer Andrea Loizeau Elsa Lorthe Chantal Luedi Jean‐Luc Magnin Chantal Martinez Éric Masserey Dominik Menges Gisela Michel Rosalba Morese Nicolai Mösli

Abstract Background Seroprevalence and the proportion of people with neutralizing activity (functional immunity) against SARS-CoV-2 variants were high in early 2022. In this prospective, population- based, multi-region cohort study, we assessed development functional hybrid immunity (induced by vaccination infection) general population during period incidence infections Omicron variants. Methods We randomly selected individuals aged ≥16 years from southern (n = 739) north-eastern 964)...

10.1093/ije/dyad098 article EN cc-by-nc-nd International Journal of Epidemiology 2023-07-05

A higher incidence of asthma is reported in women compared with men, but evidence later adulthood limited. We aimed to determine the 20-year cumulative adult Switzerland and its relation sex, taking into account age allergic sensitisation. assessed self-report doctor-diagnosed between 1991/1992 2010/2011 5128 subjects without asthma, aged 18–60 years at baseline. The age-related probability onset was analysed by logistic regression adjusting for potential confounders stratified sex...

10.1183/13993003.02278-2014 article EN European Respiratory Journal 2015-07-23

Residential greenness has been associated with health benefits, but its biological mechanism is largely unknown. Investigation of greenness-related DNA methylation profiles can contribute to mechanistic understanding the benefits residential greenness. To identify in immediate surroundings residence. We analyzed genome-wide 1938 blood samples (982 participants) from Swiss Cohort Study on Air Pollution and Lung Heart Diseases Adults (SAPALDIA). estimated based normalized difference vegetation...

10.1016/j.envint.2021.106945 article EN cc-by Environment International 2021-10-21
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