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    Wyświetlanie 1-7 z 7
    Tytuł:
    Epidemiologično proučvane nazamʺrsâvaneto na vʺzduha i zdraveto vgrad Plovdiv
    Epidemiological study of air pollution and health in the city of Plovdiv
    Епидемиологично проучване на замърсяването на въздуха и здравето в град Пловдив
    Autorzy:
    Dzhambov, Angel M.
    Markevych, Iana
    Helbich, Marco
    Dimitrova, Donka
    Nieuwenhuijsen, Mark J.
    Burov, Angel
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
    Tytuł:
    Physical urban environment and cardiometabolic diseases in the five largest Bulgarian cities
    Autorzy:
    Helbich, Marco
    Markevych, Iana
    Dimitrova, Donka
    Burov, Angel
    Dzhambov, Angel M.
    Nieuwenhuijsen, Mark J.
    Opis:
    This study investigated the associations between residential environmental characteristics and the prevalence of cardiometabolic diseases in the five largest Bulgarian cities. Representative cross-sectional survey data (N = 4640 adults) was collected in Sofia, Plovdiv, Varna, Burgas, and Ruse. Participants self-reported diagnosis or medication intake for hypertension, ischemic heart disease (IHD), stroke, and diabetes mellitus, as well as domestic burning of solid fuel and having a domestic garden. Residential addresses were linked to greenspace (overall vegetation level, tree cover, urban greenspace), bluespace, walkability, air pollution (NO 2 noise (L den ), and traffic ). In the 300 m buffer, bluespace presence was inversely associated with hypertension (odds ratio [OR] = 0.67; 95% CI: 0.45, 1.00), IHD (OR = 0.45; 95% CI: 0.21, 0.99), and diabetes (OR = 0.51; 95% CI: 0.25, 1.04). Higher walkability and tree cover were inversely associated with hypertension (OR per 2 units CI: 0.75, 0.96) and diabetes (OR per 10% =0.85; 95% = 0.77; 95% CI: 0.62, 0.97), respectively. These associations were stronger in larger buffers. Solid fuel burning was associated with IHD (OR = 1.63; 95% CI: 1.07, 2.50). There was an indication of a positive association between aircraft L den sociations for domestic gardens, NO 2 and both stroke and IHD. The direction of the as, road traffic and railway L den was counterintuitive. We detected some nonlinear associations. In conclusion, people living in urban neighborhoods that were more walkable, closer to bluespace, and greener had lower prevalence of cardiometabolic diseases, while solid fuel burning was associated with higher odds of cardiovascular diseases. Unexpected associations with some exposures may be due to unaccounted for urban fabric characteristics. This study is among the first assessing an understudied region in Southeastern Europe. Its findings have the potential to inform public discourse and provide evidence to support the implementation of urban design conducive to cardiometabolic health.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
    Tytuł:
    Sleep problems mediate the association between outdoor nighttime light and symptoms of depression and anxiety : a cross-sectional, multi-city study in Bulgaria
    Autorzy:
    Burov, Angel
    Dimitrova, Donka
    Helbich, Marco
    Nieuwenhuijsen, Mark J.
    Markevych, Iana
    Dzhambov, Angel M.
    Opis:
    Background: Nighttime light is a growing anthropogenic health threat, particularly in urban areas. Limited evidence suggests that exposure to outdoor artificial light at night (ALAN) may be associated with people's mental health by disrupting sleep-wake cycles. Aims: We assessed 1) the association between ALAN exposure and adults' symptoms of depression and anxiety, 2) whether the association was modified by sex, age, and income, and 3) the mediating role of sleep problems. Methods: We obtained cross-sectional data from 4,068 adults from the five largest Bulgarian cities. Depression and anxiety symptoms were measured using the 4-item Patient Health Questionnaire (PHQ-4). Sleep problems were self-reported based on three items. Outdoor ALAN at residential addresses was assessed using annual radiance levels obtained from satellite imagery. Regression models were adjusted for person-level characteristics, green space, and nitrogen dioxide (NO 2 ). We also assessed effect modification by sex, age, and income. Using mediation analyses, we tested sleep problems as a mediator of the ALAN-PHQ-4 association. Results: Greater ALAN exposure in the fully adjusted model was marginally associated with higher PHQ-4 scores. We observed no effect modification. The mediator, sleep problems, was also positively associated with ALAN. The mediation of sleep problems was significantly positive. While the direct association was null, the total ALAN association was marginally and positively associated with PHQ-4 scores. Conclusions: Our findings suggest a positive association between outdoor nighttime light pollution and mental health. Poor sleep quality is a possible pathway relating ALAN exposure to mental health. Considering the increasing ubiquity and intensity of urban nighttime illumination, light pollution-reducing policies may provide significant health benefits for urban populations.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
    Tytuł:
    Does nature make us less lonely? : analysis in Bulgarias five largest cities
    Autorzy:
    Helbich, Marco
    Baumbach, Clemens
    Markevych, Iana
    Dimitrova, Donka
    Burov, Angel
    Dzhambov, Angel M.
    Nieuwenhuijsen, Mark J.
    Opis:
    Background: Loneliness is prevalent and increases risks of disease and premature death. We aimed to investigate whether greater exposure to nature is associated with less loneliness in urban Bulgarian adults, and whether the association was modified by sociodemographic factors. Methods: The analytic sample comprised 3604 adults from a cross-sectional population-based survey conducted in 2023 in the five largest Bulgarian cities. Loneliness was self-reported with a single item on a seven-point Likert scale. Availability of nature was assessed by several GIS-derived indicators: normalised difference vegetation index (NDVI), tree cover density, urban green space, all in a 300 m buffer around home, and distance to blue space. Self-reported nature indicators included domestic garden, green space and blue space quality, green space and blue space window view, and time spent in green and blue space. Adjusted negative binomial regressions with random intercept for city district were used to assess associations with loneliness. We further checked effect modification by city type, sex, age, relationship, employment status and education. Results: Residing in areas with more urban green space, higher green space quality, and green space window view and spending more time in green and blue space were associated with lower loneliness scores. Living in low or high compared to medium level NDVI settings or in areas with higher tree cover density was associated with higher loneliness scores. Sociodemographic factors modified some of these associations. Conclusions: Our findings underscore the importance of extending and improving structured urban green spaces in Bulgarian cities.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
    Tytuł:
    Exposure-response relationships between road traffic, railway, and aircraft noise and annoyance in Bulgarian cities
    Autorzy:
    Helbich, Marco
    Markevych, Iana
    Dimitrova, Donka
    Burov, Angel
    Hagenauer, Julian
    Dzhambov, Angel M.
    Nieuwenhuijsen, Mark J.
    Opis:
    This study aimed to develop exposure-response relationships (ERRs) between road, rail, and air traffic noise and high noise annoyance (HNA) and to assess the HNA disease burden. In 2023, 4640 adults were cross-sectionally sampled from the five largest cities in Bulgaria. Participants' road, rail/tram, and air traffic HNA was defined as the top two categories (60% cut-off point) of a 5-point scale. A 72% cut-off approximation was also used. European Noise Directive maps were used to assign day-evening-night equivalent sound levels (Lden) to residences. ERRs were derived and used, together with the new WHO disability weight for HNA, to calculate disability-adjusted life years (DALYs). DALYs were monetised based on Bulgaria's gross domestic product (GDP) per capita and the value of a life year (VOLY). In fully adjusted models, Lden was non-linearly associated with HNA. Road traffic Lden [range 42.5–77.5 dB] was positively associated with HNA only above 62.5 dB, whereas the upward trend for rail [range 37.5–72.5 dB] and air traffic Lden [range 37.5–57.5 dB] started at 40–45 dB. Using this study's ERRs, the burden among people exposed to ≥40 dB was 3476 (1896–5056) DALYs, $ 39 138 953 (21 348 520–56 929 386) based on GDP, and € 243 310 984 (94 796 487–505 581 266) based on VOLY. Using the WHO's curves, the burden was 4312 (2352–6273) DALYs, $ 48 559 330 (26 486 907–70 631 753), and € 301 873 648 (117 613 110–627 269 918). In conclusion, we could only derive a plausible ERR for railway noise annoyance. Until better ERRs are derived for the Bulgarian population, we recommend using the WHO curves for road traffic and aircraft noise annoyance.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
    Tytuł:
    Methodological guidance for selecting buffers in greenspace : health studies
    Autorzy:
    Su, Jason G
    Jashni, Mahsa
    Feng, Xiaoqi
    Amegah, Adeladza Kofi
    Bach, Albert
    Yang, Bo-Yi
    de Hoogh, Kees
    Dzhambov, Angel M
    Jacquemin, Benedicte
    Nawrot, Tim S
    Psyllidis, Achilleas
    Samuelsson, Karl
    Fernandes, Amanda
    Knibbs, Luke D
    Ibarluzea, Jesús
    Hystad, Perry
    Jerrett, Michael
    Fallah Madvari, Rohollah
    Astell-Burt, Thomas
    Giannico, Vincenzo
    Gouveia, Nelson
    Heinrich, Joachim
    Pearce, Jamie
    Valentin, Antonia
    Triguero-Mas, Margarita
    Mehrparvar, Amirhooshang
    Plusquin, Michelle
    Zhao, Tianyu
    Helbich, Marco
    Bratman, Gregory N
    Markevych, Iana
    Dadvand, Payam
    Yang, Jun
    Knobel, Pablo
    Miri, Mohammad
    Fuertes, Elaine
    O'Callaghan-Gordo, Cristina
    Labib, S M
    Nieuwenhuijsen, Mark J
    Hartig, Terry
    White, Mathew P
    Lertxundi, Aitana
    Kogevinas, Manolis
    Mitchell, Richard
    Zare Sakhvidi, Mohammad Javad
    de Vries, Sjerp
    James, Peter
    van den Bosch, Matilda
    Ubalde-Lopez, Mònica
    Sanesi, Giovanni
    Zhang, Jinguang
    Browning, Matthew H E M
    Opis:
    Greenspace can promote health via diverse pathways. A common approach to assessing greenspace exposure is to estimate vegetation availability within buffers surrounding locations where people reside or spend time. However, no clear framework for informed buffer selection exists, and choices made show considerable heterogeneity, impeding evidence synthesis and causal inference. In this Personal View conducted by an interdisciplinary panel of experts, we aimed to establish a framework for informed buffer selection for epidemiological studies on greenspace. We began by reviewing available approaches for the selection of buffer types, which range from single fixed-location approaches to high-resolution mobility-based activity-space approaches, as well as different buffer sizes. We then summarised the determinants of buffer type and size selection including health outcomes and underlying mechanisms, study population, contextual factors, and data characteristics. Finally, based on these determinants, we developed recommendations for future research. Buffer type and size selection should be hypothesis driven, reflecting presumed greenspace-health mechanisms. Buffer selection should target activity-based approaches where feasible, and multiple buffer sizes should be tested. Overall, the assessment of greenspace exposure should shift from ad-hoc approaches to personalised, multiscale, and context-specific methods. We call for standardising and reporting the rationale for buffer selection to minimise bias and enhance comparability and evidence synthesis across studies.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
      Wyświetlanie 1-7 z 7

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