Ta‐chien Chan
Biographic Data
| ID | 4426543 |
|---|---|
| NAME | Ta‐chien Chan |
| GIVEN NAMES | Ta‐chien |
| FAMILY NAME | Chan |
| SIGNATURE | CHAN T C |
| AFFILIATIONS | Research Center for Humanities and Social Sciences, Academia Sinica |
| ORCID | 0000-0002-1685-783X |
| VERIFIED | Yes |
| TOTAL WORKS | 28 |
| TOTAL CITATIONS | 10 |
| AUTHOR COUNT | 28 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2011 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 2 |
Long-term impacts of heatwaves on accelerated ageing
Application of deep learning for symbol detection on historical maps to explore spatiotemporal changes in the regional tea industry of early 20th-century Taiwan
Focusing on the early history of the tea industry in Tamsui, Taiwan, this study uses land used data extracted from maps of the 1900s and 1920s to explore the regional characteristics and changes in the distribution of tea plantations. Map symbol detection modeling was performed using Artificial Intelligence deep learning techniques, which have been growing in the field of map research in recent years. Through the constructed symbol detection mode…
Neighbourhood greenness might impact thyroid hormone levels in children, adolescents, and young adults
Our study provided evidence on the impacts of neighbourhood greenness on thyroid hormone levels among young populations. These findings may reveal potential biological mechanisms and contribute to urban planning and public health strategies
Human respiratory syncytial virus subgroups A and B outbreak in a kindergarten in Zhejiang Province, China, 2023
Background: In May-June 2023, an unprecedented outbreak of human respiratory syncytial virus (HRSV) infections occurred in a kindergarten, Zhejiang Province, China. National, provincial, and local public health officials investigated the cause of the outbreak and instituted actions to control its spread. Methods: We interviewed patients with the respiratory symptoms by questionnaire. Respiratory samples were screened for six respiratory pathogens…
Epidemiological features and trends in the mortality rates of 10 notifiable respiratory infectious diseases in China from 2004 to 2020
Objectives The aim of this study is to describe, visualize, and compare the trends and epidemiological features of the mortality rates of 10 notifiable respiratory infectious diseases in China from 2004 to 2020. Setting Data were obtained from the database of the National Infectious Disease Surveillance System (NIDSS) and reports released by the National and local Health Commissions from 2004 to 2020. Spearman correlations and Joinpoint regressio…
Digital oral health biomarkers for early detection of cognitive decline
A digital oral health biomarker approach is feasible for tracing cognitive function. When maintaining oral hygiene and oral health, cognitive status can be assessed simultaneously and early monitoring of cognitive status can prevent disease burden in the future
Comparison of clinical characteristics between Covid-19 and H7N9 fatal cases
Objective: The outbreak of COVID-19 in 2020 is reminiscent of the H7N9 outbreak in 2013, which poses a huge threat to human health. We aim to compare clinical features and survival factors in fatal cases of COVID-19 and H7N9. Methods: Data on confirmed COVID-19 and H7N9 fatal cases identified in mainland China were analyzed to compare demographic characteristics and clinical severity. Survival curves were estimated by the Kaplan-Meier method and …
Spatial Analysis on Supply and Demand of Adult Surgical Masks in Taipei Metropolitan Areas in the Early Phase of the Covid-19 Pandemic
This study aimed to assess the gap between the supply and demand of adult surgical masks under limited resources. Owing to the implementation of the real-name mask rationing system, the historical inventory data of aggregated mask consumption in a pharmacy during the early period of the COVID-19 outbreak (April and May 2020) in Taiwan were analyzed for supply-side analysis. We applied the Voronoi diagram and areal interpolation methods to delinea…
Association of Air Pollution and Weather Factors with Traffic Injury Severity
Exposure to air pollutants may elevate the injury severity scores (ISSs) for road traffic injuries (RTIs). This multicenter cross-sectional study aimed to investigate the associations between air pollution, weather conditions, and RTI severity. This retrospective study was performed in Taiwan in 2018. The location of each road traffic accident (RTA) was used to determine the nearest air quality monitoring and weather station, and the time of each…
Environmental and personal factors for osteoporosis or osteopenia from a large health check-up database
Interventions in different directions, such as having better health behaviors, increasing sun exposure, and residing in a highly walkable environment, are beneficial for reducing the risk of low BMD
Dynamic modeling for noise mapping in urban areas
Environmental noise has been a major environmental nuisance in metropolitan cities. To achieve the goal of sustainable community, noise reduction is an important approach. Without systematic noise mapping, the spatio-temporal distribution of noise variations is hard to capture. This study proposes a new methodology framework to combine statistical models and acoustic propagation for dynamic updates of 2D and 3D traffic noise maps by using a limit…
Ambient Cumulative PM2.5 Exposure and the Risk of Lung Cancer Incidence and Mortality
Smoking, sex, air pollution, lifestyle, and diet may act independently or in concert with each other to contribute to the different outcomes of lung cancer (LC). This study aims to explore their associations with the carcinogenesis of LC, which will be useful for formulating further preventive strategies. This retrospective, longitudinal follow-up cohort study was carried out by connecting to the MJ Health Database, Taiwan Cancer Registry databas…
Neighbourhood Social Determinants of Health and Geographical Inequalities in Premature Mortality in Taiwan
Geographical inequalities in premature mortality and the role of neighbourhood social determinants of health (SDOH) have been less explored. This study aims to assess the geographical inequalities in premature mortality in Taiwan and how neighbourhood SDOH contribute to them and to examine the place-specific associations between neighbourhood SDOH and premature mortality. We used township-level nationwide data for the years 2015 to 2019, includin…
Reduced effectiveness of tree planting on micro-climate cooling due to ozone pollution—A modeling study
By reducing growth of leaves, ozone pollution reduces the cooling effect of trees. • Tree performance on surface temperature, sensible heat and PET were studied. • Planning implications of tree planting due to the ozone effect were discussed. Urban tree planting is an important measure to provide micro-climate cooling (MCC) in megacities. However all of the studies available in the literature were focused on an ideal and clean environment where t…
The Association between Noise Exposure and Metabolic Syndrome
Metabolic syndrome is becoming more common worldwide. Studies suggest environmental pollution, including traffic noise, might be linked with metabolic syndrome. This study sought to evaluate how noise exposure is linked to the development of metabolic syndrome and its components in Taiwan. Using data from a cohort of 42,509 participants and Cox proportional hazards regression models, the effects of noise exposure on metabolic syndrome and its com…
Spatial Analysis of Ambient PM2.5 Exposure and Bladder Cancer Mortality in Taiwan
Fine particulate matter (PM 2.5 ) is an air pollutant that is receiving intense regulatory attention in Taiwan. In previous studies, the effect of air pollution on bladder cancer has been explored. This study was conducted to elucidate the effect of atmospheric PM 2.5 and other local risk factors on bladder cancer mortality based on available 13-year mortality data. Geographically weighted regression (GWR) was applied to estimate and interpret th…
Genotypic and Epidemiological Trends of Acute Gastroenteritis Associated with Noroviruses in China from 2006 to 2016
There are periodical norovirus-associated acute gastroenteritis outbreaks around the world. This study aimed to analyze the molecular and epidemiological features of norovirus infections in China during 2006-2016. We extracted epidemiological data from 132 norovirus outbreaks and the norovirus genotyping for 1291 sequences in China over the past ten years. A total of 132 norovirus outbreaks (8133 cases) were reported in China, where the east and …
Comparative Epidemiology of Human Fatal Infections with Novel, High (H5N6 and H5N1) and Low (H7N9 and H9N2) Pathogenicity Avian Influenza A Viruses
This study aimed to assess the mortality risks for human infection with high (HPAI) and low (LPAI) pathogenicity avian influenza viruses. The HPAI case fatality rate (CFR) was far higher than the LPAI CFR [66.0% (293/444) vs. 68.75% (11/16) vs. 40.4% (265/656) vs. 0.0% (0/18) in the cases with H5N1, H5N6, H7N9, and H9N2 viruses, respectively; p p p = 0.018; 61 vs. 49 years for H7H9, p p = 0.046; 58.6% (156/266) vs. 34.8% (135/388) for H7H9, p p p…
The intersections of the care regime and the migrant care worker policy
Employment of migrant care workers (MCWs) is increasing, globalising, and is feminised, but the style, nature and extent of MCW policy in Taiwan is very different. This study explores the specific path for MCW policies amidst the globalisation of MCWs and analyses the intersection of the care, migration and employment regimes and compares these to South Korea’s and Japan’s migrant worker policies. This gives a deeper understanding of the formatio…
A flow-based statistical model integrating spatial and nonspatial dimensions to measure healthcare access
Assessing access to healthcare for an entire healthcare system involves accounting for demand, supply, and geographic variation. In order to capture the interaction between healthcare services and populations, various measures of healthcare access have been utilized, including the popular two-step floating catchment area (2SFCA) method. However, despite the many advantages of 2SFCA, the problems, such as inappropriate assumption of healthcare dem…
Minimizing Spatial Variability of Healthcare Spatial Accessibility—The Case of a Dengue Fever Outbreak
Outbreaks of infectious diseases or multi-casualty incidents have the potential to generate a large number of patients. It is a challenge for the healthcare system when demand for care suddenly surges. Traditionally, valuation of heath care spatial accessibility was based on static supply and demand information. In this study, we proposed an optimal model with the three-step floating catchment area (3SFCA) to account for the supply to minimize va…
Increased Risk of Respiratory Mortality Associated with the High-Tech Manufacturing Industry
Global high-tech manufacturers are mainly located in newly industrialized countries, raising concerns about adverse health consequences from industrial pollution for people living nearby. We investigated the ecological association between respiratory mortality and the development of Taiwan's high-tech manufacturing, taking into account industrialization and socioeconomic development, for 19 cities and counties-6 in the science park group and 13 i…
Spatial Clustering and Local Risk Factors of Chronic Obstructive Pulmonary Disease (COPD)
Chronic obstructive pulmonary disease (COPD) mortality has been steadily increasing in Taiwan since 2009. In order to understand where the hotspot areas are and what the local risk factors are, we integrated an ecological and a case-control study. We used a two-stage approach to identify hotspots and explore the possible risk factors for developing COPD. The first stage used the annual township COPD mortality from 2000 to 2012 and applied the ret…
Detection of influenza-like illness aberrations by directly monitoring Pearson residuals of fitted negative binomial regression models
The proposed simple approach was able to filter out temporal trends, adjust for temperature, and issue warning signals for the first wave of the influenza epidemic in a timely and accurate manner
Spatiotemporal Evolution of Market Towns in the Jiangnan Area During the Ming-Qing Dynasties of China
In this article, the authors present a spatiotemporal model for elucidating the evolution of market towns spanning from before 1550 to 1980. The study area, Jiangnan (i.e., current Shanghai and Suzhou cities area), with its flat elevation and compact river network, is the best place to evaluate the dynamic hierarchical change of the market towns in China. The population and the geographical location of each market town are manually extracted from…
A flow-based statistical model integrating spatial and nonspatial dimensions to measure healthcare access
Assessing access to healthcare for an entire healthcare system involves accounting for demand, supply, and geographic variation. In order to capture the interaction between healthcare services and populations, various measures of healthcare access have been utilized, including the popular two-step floating catchment area (2SFCA) method. However, despite the many advantages of 2SFCA, the problems, such as inappropriate assumption of healthcare dem…
Dynamic modeling for noise mapping in urban areas
Environmental noise has been a major environmental nuisance in metropolitan cities. To achieve the goal of sustainable community, noise reduction is an important approach. Without systematic noise mapping, the spatio-temporal distribution of noise variations is hard to capture. This study proposes a new methodology framework to combine statistical models and acoustic propagation for dynamic updates of 2D and 3D traffic noise maps by using a limit…
Spatiotemporal Evolution of Market Towns in the Jiangnan Area During the Ming-Qing Dynasties of China
In this article, the authors present a spatiotemporal model for elucidating the evolution of market towns spanning from before 1550 to 1980. The study area, Jiangnan (i.e., current Shanghai and Suzhou cities area), with its flat elevation and compact river network, is the best place to evaluate the dynamic hierarchical change of the market towns in China. The population and the geographical location of each market town are manually extracted from…
A GIS-Aided Assessment of the Health Hazards of Cadmium in Farm Soils in Central Taiwan
A geostatistical method was developed to examine the correlation, or lack of it, between the levels of cadmium (Cd) detected in farm soils and those detected in the human specimens collected from residents around the contaminated areas in Changhua County where cadmium contamination of staple rice has been documented. We used the Taiwan EPA environment data in 2002 and human data which were generated by the National Health Research Institutes duri…
Addressing Health Disparities in Chronic Kidney Disease
According to the official health statistics, Taiwan has the highest prevalence of end stage renal disease (ESRD) in the world. Each year, around 60,000 ESRD patients in Taiwan consume 6% of the national insurance budget for dialysis treatment. The prevalence of chronic kidney disease (CKD) has been climbing during 2008-2012. However, the spatial disparities and clustering of CKD at the public health level have rarely been discussed. The aims of t…
Spatio-temporal analysis on enterovirus cases through integrated surveillance in Taiwan
Local public health professionals can monitor the temporal and spatial trends plus spatio-temporal clusters and isolation rate of EV-71 in mild and severe EV cases in a community when virus transmission is high, to provide early warning signals and to prevent subsequent severe epidemics
Spatial Clustering and Local Risk Factors of Chronic Obstructive Pulmonary Disease (COPD)
Chronic obstructive pulmonary disease (COPD) mortality has been steadily increasing in Taiwan since 2009. In order to understand where the hotspot areas are and what the local risk factors are, we integrated an ecological and a case-control study. We used a two-stage approach to identify hotspots and explore the possible risk factors for developing COPD. The first stage used the annual township COPD mortality from 2000 to 2012 and applied the ret…
Detection of influenza-like illness aberrations by directly monitoring Pearson residuals of fitted negative binomial regression models
The proposed simple approach was able to filter out temporal trends, adjust for temperature, and issue warning signals for the first wave of the influenza epidemic in a timely and accurate manner
Spatiotemporal Evolution of Market Towns in the Jiangnan Area During the Ming-Qing Dynasties of China
In this article, the authors present a spatiotemporal model for elucidating the evolution of market towns spanning from before 1550 to 1980. The study area, Jiangnan (i.e., current Shanghai and Suzhou cities area), with its flat elevation and compact river network, is the best place to evaluate the dynamic hierarchical change of the market towns in China. The population and the geographical location of each market town are manually extracted from…
Minimizing Spatial Variability of Healthcare Spatial Accessibility—The Case of a Dengue Fever Outbreak
Outbreaks of infectious diseases or multi-casualty incidents have the potential to generate a large number of patients. It is a challenge for the healthcare system when demand for care suddenly surges. Traditionally, valuation of heath care spatial accessibility was based on static supply and demand information. In this study, we proposed an optimal model with the three-step floating catchment area (3SFCA) to account for the supply to minimize va…
Increased Risk of Respiratory Mortality Associated with the High-Tech Manufacturing Industry
Global high-tech manufacturers are mainly located in newly industrialized countries, raising concerns about adverse health consequences from industrial pollution for people living nearby. We investigated the ecological association between respiratory mortality and the development of Taiwan's high-tech manufacturing, taking into account industrialization and socioeconomic development, for 19 cities and counties-6 in the science park group and 13 i…
Spatial Analysis of Ambient PM2.5 Exposure and Bladder Cancer Mortality in Taiwan
Fine particulate matter (PM 2.5 ) is an air pollutant that is receiving intense regulatory attention in Taiwan. In previous studies, the effect of air pollution on bladder cancer has been explored. This study was conducted to elucidate the effect of atmospheric PM 2.5 and other local risk factors on bladder cancer mortality based on available 13-year mortality data. Geographically weighted regression (GWR) was applied to estimate and interpret th…
Genotypic and Epidemiological Trends of Acute Gastroenteritis Associated with Noroviruses in China from 2006 to 2016
There are periodical norovirus-associated acute gastroenteritis outbreaks around the world. This study aimed to analyze the molecular and epidemiological features of norovirus infections in China during 2006-2016. We extracted epidemiological data from 132 norovirus outbreaks and the norovirus genotyping for 1291 sequences in China over the past ten years. A total of 132 norovirus outbreaks (8133 cases) were reported in China, where the east and …
Comparative Epidemiology of Human Fatal Infections with Novel, High (H5N6 and H5N1) and Low (H7N9 and H9N2) Pathogenicity Avian Influenza A Viruses
This study aimed to assess the mortality risks for human infection with high (HPAI) and low (LPAI) pathogenicity avian influenza viruses. The HPAI case fatality rate (CFR) was far higher than the LPAI CFR [66.0% (293/444) vs. 68.75% (11/16) vs. 40.4% (265/656) vs. 0.0% (0/18) in the cases with H5N1, H5N6, H7N9, and H9N2 viruses, respectively; p p p = 0.018; 61 vs. 49 years for H7H9, p p = 0.046; 58.6% (156/266) vs. 34.8% (135/388) for H7H9, p p p…
The intersections of the care regime and the migrant care worker policy
Employment of migrant care workers (MCWs) is increasing, globalising, and is feminised, but the style, nature and extent of MCW policy in Taiwan is very different. This study explores the specific path for MCW policies amidst the globalisation of MCWs and analyses the intersection of the care, migration and employment regimes and compares these to South Korea’s and Japan’s migrant worker policies. This gives a deeper understanding of the formatio…
A flow-based statistical model integrating spatial and nonspatial dimensions to measure healthcare access
Assessing access to healthcare for an entire healthcare system involves accounting for demand, supply, and geographic variation. In order to capture the interaction between healthcare services and populations, various measures of healthcare access have been utilized, including the popular two-step floating catchment area (2SFCA) method. However, despite the many advantages of 2SFCA, the problems, such as inappropriate assumption of healthcare dem…
Reduced effectiveness of tree planting on micro-climate cooling due to ozone pollution—A modeling study
By reducing growth of leaves, ozone pollution reduces the cooling effect of trees. • Tree performance on surface temperature, sensible heat and PET were studied. • Planning implications of tree planting due to the ozone effect were discussed. Urban tree planting is an important measure to provide micro-climate cooling (MCC) in megacities. However all of the studies available in the literature were focused on an ideal and clean environment where t…
The Association between Noise Exposure and Metabolic Syndrome
Metabolic syndrome is becoming more common worldwide. Studies suggest environmental pollution, including traffic noise, might be linked with metabolic syndrome. This study sought to evaluate how noise exposure is linked to the development of metabolic syndrome and its components in Taiwan. Using data from a cohort of 42,509 participants and Cox proportional hazards regression models, the effects of noise exposure on metabolic syndrome and its com…
Ambient Cumulative PM2.5 Exposure and the Risk of Lung Cancer Incidence and Mortality
Smoking, sex, air pollution, lifestyle, and diet may act independently or in concert with each other to contribute to the different outcomes of lung cancer (LC). This study aims to explore their associations with the carcinogenesis of LC, which will be useful for formulating further preventive strategies. This retrospective, longitudinal follow-up cohort study was carried out by connecting to the MJ Health Database, Taiwan Cancer Registry databas…
Neighbourhood Social Determinants of Health and Geographical Inequalities in Premature Mortality in Taiwan
Geographical inequalities in premature mortality and the role of neighbourhood social determinants of health (SDOH) have been less explored. This study aims to assess the geographical inequalities in premature mortality in Taiwan and how neighbourhood SDOH contribute to them and to examine the place-specific associations between neighbourhood SDOH and premature mortality. We used township-level nationwide data for the years 2015 to 2019, includin…
Comparison of clinical characteristics between Covid-19 and H7N9 fatal cases
Objective: The outbreak of COVID-19 in 2020 is reminiscent of the H7N9 outbreak in 2013, which poses a huge threat to human health. We aim to compare clinical features and survival factors in fatal cases of COVID-19 and H7N9. Methods: Data on confirmed COVID-19 and H7N9 fatal cases identified in mainland China were analyzed to compare demographic characteristics and clinical severity. Survival curves were estimated by the Kaplan-Meier method and …
Spatial Analysis on Supply and Demand of Adult Surgical Masks in Taipei Metropolitan Areas in the Early Phase of the Covid-19 Pandemic
This study aimed to assess the gap between the supply and demand of adult surgical masks under limited resources. Owing to the implementation of the real-name mask rationing system, the historical inventory data of aggregated mask consumption in a pharmacy during the early period of the COVID-19 outbreak (April and May 2020) in Taiwan were analyzed for supply-side analysis. We applied the Voronoi diagram and areal interpolation methods to delinea…
Association of Air Pollution and Weather Factors with Traffic Injury Severity
Exposure to air pollutants may elevate the injury severity scores (ISSs) for road traffic injuries (RTIs). This multicenter cross-sectional study aimed to investigate the associations between air pollution, weather conditions, and RTI severity. This retrospective study was performed in Taiwan in 2018. The location of each road traffic accident (RTA) was used to determine the nearest air quality monitoring and weather station, and the time of each…
Environmental and personal factors for osteoporosis or osteopenia from a large health check-up database
Interventions in different directions, such as having better health behaviors, increasing sun exposure, and residing in a highly walkable environment, are beneficial for reducing the risk of low BMD
Dynamic modeling for noise mapping in urban areas
Environmental noise has been a major environmental nuisance in metropolitan cities. To achieve the goal of sustainable community, noise reduction is an important approach. Without systematic noise mapping, the spatio-temporal distribution of noise variations is hard to capture. This study proposes a new methodology framework to combine statistical models and acoustic propagation for dynamic updates of 2D and 3D traffic noise maps by using a limit…
Epidemiological features and trends in the mortality rates of 10 notifiable respiratory infectious diseases in China from 2004 to 2020
Objectives The aim of this study is to describe, visualize, and compare the trends and epidemiological features of the mortality rates of 10 notifiable respiratory infectious diseases in China from 2004 to 2020. Setting Data were obtained from the database of the National Infectious Disease Surveillance System (NIDSS) and reports released by the National and local Health Commissions from 2004 to 2020. Spearman correlations and Joinpoint regressio…
Digital oral health biomarkers for early detection of cognitive decline
A digital oral health biomarker approach is feasible for tracing cognitive function. When maintaining oral hygiene and oral health, cognitive status can be assessed simultaneously and early monitoring of cognitive status can prevent disease burden in the future
Human respiratory syncytial virus subgroups A and B outbreak in a kindergarten in Zhejiang Province, China, 2023
Background: In May-June 2023, an unprecedented outbreak of human respiratory syncytial virus (HRSV) infections occurred in a kindergarten, Zhejiang Province, China. National, provincial, and local public health officials investigated the cause of the outbreak and instituted actions to control its spread. Methods: We interviewed patients with the respiratory symptoms by questionnaire. Respiratory samples were screened for six respiratory pathogens…
Medicine (22 works) · Environmental health (16 works) · Geography (16 works) · Internal Medicine (14 works) · Demography (9 works) · Demography (7 works) · Statistics (7 works) · Virology (7 works) · Air Quality and Health Impacts (6 works) · Environmental Science (6 works)