Geographical disparities in the impacts of heat on diabetes mortality and the protective role of greenness in Thailand: A nationwide case-crossover analysis

He, Yiling; Cheng, Liang; Bao, Junzhe; Deng, Shizhou; Liao, Wei; Wang, Qiong; Tawatsupa, Benjawan; Hajat, Shakoor; Huang, Cunrui

doi:10.1016/j.scitotenv.2019.135098

Cited by 24 publications

(16 citation statements)

References 29 publications

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“…This difference is mainly due to the high temperature and relative humidity in Thailand all year. Thailand is located in a tropical region, the daily maximum temperatures are above 30 °C in most regions of Thailand throughout a typical year, without limit to summer [ 34 ], thus the weather conditions might differ from China and Korea where cities are situated in the temperate climate zone [ 35 ]. Second, under global warming situations, the air temperature in Thailand has had a relatively high increase in recent years [ 36 ].…”

Section: Discussionmentioning

confidence: 99%

The Mortality Effect of Apparent Temperature: A Multi-City Study in Asia

Cao

Wang

Huang

et al. 2021

IJERPH

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(1) Background: The health effect of temperature has become a rising public health topic. The objective of this study is to assess the association between apparent temperature and non-accidental deaths, and the mortality burden attributed to cold and heat temperature; (2) Methods: The daily data on temperature and deaths were collected from 10 cities in Thailand, Korea and China. We fitted a time-series regression with a distributed lag nonlinear model (DLNM) to derive the health risk of temperature for each city and then pooled them to get the overall cumulative risk by multivariate meta-analysis. Additionally, we calculated the attributable fraction of deaths for heat and cold, which was defined as temperatures above and below minimum-mortality temperature (MMT); (3) Results: There are regional heterogeneities in the minimum mortality percentiles (MMP) and attributable fractions for different countries. The MMP varied from about the 5–10th percentile in Thailand to 63–93rd percentile in China and Korea. The attributable fractions of the total deaths due to short-term exposure to temperature in Asia is 7.62%, of which the cold effect (6.44%) is much higher than the heat effect (1.18%); (4) Conclusions: Our study suggested that apparent temperature was associated with an increase in non-accidental mortality. Most of the temperature-related mortality burden was attributable to cold, except for Thailand.

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Section: Discussionmentioning

confidence: 99%

The Mortality Effect of Apparent Temperature: A Multi-City Study in Asia

Cao

Wang

Huang

et al. 2021

IJERPH

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“…These studies were conducted in China (6 studies), 31,[37][38][39][40][41] Japan (3 studies), [42][43][44] Hong Kong (2 studies), 29,45 South Korea (2 studies), 46,47 Taiwan (2 studies), 48,49 and New Zealand (2 studies). 50,51 One study each was reported from Thailand, 52 Vietnam, 53 and Australia. 30 Only eight studies were conducted in low-and middle-income countries (Table 1 and Supplementary Table 1).…”

Section: Peer Reviewmentioning

confidence: 99%

“…30 Only eight studies were conducted in low-and middle-income countries (Table 1 and Supplementary Table 1). 31,37,40,41,52,53 Study participants in the longitudinal cohort studies were aged 60 years or older, whilst the prevalence studies generally covered all ages. 18 studies had participants of both genders.…”

Section: Peer Reviewmentioning

confidence: 99%

“…residential surrounding greenness examined in the studies encompassed public open spaces such as parks, natural spaces, and bushland, 30 urban green spa ces, 39,41,[45][46][47][48][49] trees, grass, plants, and natural vegetation, 29 woodland and farmland, 44 walkable green streets and spaces, 42 parks, gardens, and green areas, 40 natural areas such as parks, beaches, and fields, 50 parks, forests, wetlands, and grasslands, 38 grass, forests, and parks, 52 vegetation and city parks, 43 green and walkable neighbourhoods, 51 and green spaces of urban or rural residence areas. 31,37,53 in 10 studies, the exposure to greenness was measured by normalised The influence of residential greenness on mortality in the Asia-Pacific region: a systematic review and meta-analysis The influence of residential greenness on mortality in the Asia-Pacific region: a systematic review and meta-analysis…”

Section: Definition and Measurement Of Residential Greennessmentioning

confidence: 99%

“…Higher NDVi values indicated higher densities of green vegetation. [29][30][31]37,43,[45][46][47]51,52 Other studies measured greenness based on land areas of green space, 38,50 percentage of the total areas occupied by green space, 41,44,48,49,53 factor of walkable green streets and spaces near residence, 42 or green space per capita. 39,40 Assessment of mortality outcomes Mortality outcomes reported varied across studies.…”

Section: Peer Reviewmentioning

confidence: 99%

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The influence of residential greenness on mortality in the Asia-Pacific region: a systematic review and meta-analysis

Kua

Lee²

2021

Perspect Public Health

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Aims: To critically appraise the evidence of the impact of exposure to salutogenic green environment on mortality, which is an important endpoint in epidemiological and clinical studies. Methods: We searched for studies published and indexed in three databases (PubMed, AMED, and CINAHL Plus) from inception until 31 March 2020, complemented with a search of cited literature for articles describing the effects of greenness on mortality in Asia-Pacific region. Eligible articles were screened and data were extracted independently by two reviewers. A random-effects model was utilised to obtain pool hazard ratio (HR) and risk ratio of all-cause mortality outcome. Results: The search identified 3239 studies, of which 20 studies reporting 133,363 participants from longitudinal cohort studies and 202 million people from population-based prevalence studies were included in the review. The majority of the studies (60%) were conducted in high-income countries in Asia-Pacific. All participants of the longitudinal cohort studies were aged 60 years or older, whereas the prevalence studies involved people of all age groups. A significant protective association of green environment exposure with all-cause mortality was reported in 18 studies. Pooled results from five studies showed increased level of greenness exposure was associated with a significant decrease in all-cause mortality (pooled HR = 0.97; 95% confidence interval (CI) = 0.93 to 1.02; p < 0.01; I²= 87.8%). Meta-analysis of total number of deaths in different quartiles of green spaces noted decreased risks of mortality with all causes of death with increased surrounding greenness. Conclusions: Some limited evidence suggests that populations exposed to the greener environment have a lower risk of mortality, implying the potential role of greenness in increasing longevity. Further studies with standardised design and outcome reporting should be conducted in low- and middle-income countries and in populations of low socioeconomic status to glean more generalisable and complete evidence for public health policy implications.

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Impact of low-intensity heat events on mortality and morbidity in regions with hot, humid summers: a scoping literature review

Strathearn

Osborne

2022

Int J Biometeorol

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The objective of this study is to determine the impacts of low-intensity heat on human health in regions with hot, humid summers. Current literature has highlighted an increase in mortality and morbidity rates during significant heat events. While the impacts on high-intensity events are established, the impacts on low-intensity events, particularly in regions with hot, humid summers, are less clear. A scoping review was conducted searching three databases (PubMed, EMBASE, Web of Science) using key terms based on the inclusion criteria. We included papers that investigated the direct human health impacts of low-intensity heat events (single day or heatwaves) in regions with hot, humid summers in middle- and high-income countries. We excluded papers written in languages other than English. Of the 600 publications identified, 33 met the inclusion criteria. Findings suggest that low-intensity heatwaves can increase all-cause non-accidental, cardiovascular-, respiratory- and diabetes-related mortality, in regions experiencing hot, humid summers. Impacts of low-intensity heatwaves on morbidity are less clear, with research predominantly focusing on hospitalisation rates with a range of outcomes. Few studies investigating the impact of low-intensity heat events on emergency department presentations and ambulance dispatches were found. However, the data from a limited number of studies suggest that both of these outcome measures increase during low-intensity heat events. Low-intensity heat events may increase mortality. There is insufficient evidence of a causal effect of low-intensity heat events on increasing morbidity for a firm conclusion. Further research on the impact of low-intensity heat on morbidity and mortality using consistent parameters is warranted.

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Geographical disparities in the impacts of heat on diabetes mortality and the protective role of greenness in Thailand: A nationwide case-crossover analysis

Cited by 24 publications

References 29 publications

The Mortality Effect of Apparent Temperature: A Multi-City Study in Asia

The Mortality Effect of Apparent Temperature: A Multi-City Study in Asia

The influence of residential greenness on mortality in the Asia-Pacific region: a systematic review and meta-analysis

Impact of low-intensity heat events on mortality and morbidity in regions with hot, humid summers: a scoping literature review

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