Gender, Age and Season as Modifiers of the Effects of Diurnal Temperature Range on Emergency Room Admissions for Cause-Specific Cardiovascular Disease among the Elderly in Beijing

Abstract Background: Diurnal temperature range (DTR), an important index of climate change, has been widely applied in exploring its effect on cardiovascular disease (CVD). However, few studies have investigated the correlations between DTR and CVD in poor rural areas in China. Methods: Therefore, using a distributed lag nonlinear model and a Poisson regression model, we evaluated this relationship among farmers living in the city of Dingxi (Northwest China). From 2016 to 2019, we obtained outpatient visits for CVD and meteorological data from the New Rural Cooperative Medical Insurance of Gansu Province (NRCMI) and Meteorological Science Data Sharing Service, respectively. The effects of DTR were examined in subgroups stratified by gender and age. Results: We observed nonlinear M-patterns between DTR and CVD hospitalizations among all subgroups when DTR was at the median level (13°C). Estimated effect of a relatively low DTR (5th percentile, 4°C) on the hospital admissions of CVD was stronger than the effect of a relatively high DTR (95th percentile, 19°C). We also found that the adverse effect of DTR on CVD risk was more pronounced in females and elderly than males and younger adults at the low DTR, and vice versa at the high DTR. Conclusions: These results could guide the local authorities to improve CVD preventive strategies in the rural areas.

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A Comparison of The Effect of Diurnal Temperature Range And Apparent Temperature On Cardiovascular Disease Among Farmers In Qingyang, Northwest China

10.21203/rs.3.rs-770864/v2 ◽

2021 ◽

Author(s):

Guangyu Zhai ◽

Jintao Qi ◽

Xuemei Zhang ◽

Wenjuan Zhou ◽

Jiancheng Wang

Keyword(s):

Cardiovascular Disease ◽

Rural Areas ◽

Diurnal Temperature Range ◽

Hospital Admissions ◽

Northwest China ◽

Gansu Province ◽

Apparent Temperature ◽

Science Data ◽

Diurnal Temperature ◽

Temperature Range

Abstract Background: Apparent temperature (AT) and diurnal temperature range (DTR) have been extensively used to evaluate the effects of temperature on cardiovascular disease (CVD). However, few studies have analyzed and compared their effects on CVD in less-developed, rural areas of China.Methods: A case-only analysis was conducted of 43,567 cases of CVD morbidity in Qingyang (Northwest China) in 2011–2017 and the effects of thermal indicators were assessed using distributed lag nonlinear modelling and a Poisson regression model. Data on CVD morbidity originated from the New Rural Cooperative Medical Insurance of Gansu Province and meteorological variables were provided by the Meteorological Science Data Sharing Service.Results: Both AT and DTR had significant nonlinear and delayed impacts on hospital admissions for CVD. DTR had a stronger and more persistent effect on CVD incidence than AT. Women were more affected by high AT and low DTR than were men, while men were more vulnerable to low AT and high DTR. Temperature effects were not significantly different between people above and below 65 years of age.Conclusions: These findings provide local public health authorities with reference data concerning sensitive temperature indices for susceptible populations with a view to improving CVD preventive strategies in rural areas.

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Diurnal temperature range and emergency room admissions for chronic obstructive pulmonary disease in Taiwan

International Journal of Biometeorology ◽

10.1007/s00484-008-0187-y ◽

2008 ◽

Vol 53 (1) ◽

pp. 17-23 ◽

Cited By ~ 56

Author(s):

Wen-Miin Liang ◽

Wen-Pin Liu ◽

Hsien-Wen Kuo

Keyword(s):

Chronic Obstructive Pulmonary Disease ◽

Emergency Room ◽

Pulmonary Disease ◽

Diurnal Temperature Range ◽

Chronic Obstructive ◽

Obstructive Pulmonary Disease ◽

Diurnal Temperature ◽

Temperature Range

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Effect of diurnal temperature range on emergency room visits for acute upper respiratory tract infections

Environmental Health and Preventive Medicine ◽

10.1186/s12199-021-00974-w ◽

2021 ◽

Vol 26 (1) ◽

Author(s):

Jin Young Jang ◽

Byung Chul Chun

Keyword(s):

Respiratory Tract ◽

Emergency Room ◽

Diurnal Temperature Range ◽

Common Disease ◽

Upper Respiratory Tract ◽

Lag Effects ◽

Diurnal Temperature ◽

Temperature Range ◽

Upper Respiratory ◽

Tract Infections

Abstract Background An acute upper respiratory tract infection (URI) is the most common disease worldwide, irrespective of age or sex. This study aimed to evaluate the short-term effect of diurnal temperature range (DTR) on emergency room (ER) visits for URI in Seoul, Korea, between 2009 and 2013. Methods Daily ER visits for URI were selected from the National Emergency Department Information System, which is a nationwide daily reporting system for ER visits in Korea. URI cases were defined according to International Classification of Diseases, 10thRevision codes J00–J06. The search for DTR effects associated with URI was performed using a semi-parametric generalized additive model approach with log link. Results There were 529,527 ER visits for URI during the study period, with a daily mean of 290 visits (range, 74–1942 visits). The mean daily DTR was 8.05 °C (range, 1.1–17.6 °C). The cumulative day (lag 02) effect of DTR above 6.57 °C per 1 °C increment was associated with a 1.42% (95% confidence interval [CI] 0.04–2.82) increase in total URI. Children (≤ 5 years of age) were affected by DTR above 6.57 °C per 1 °C, with 1.45% (95% CI 0.32–2.60) at lag 02, adults (19–64 years) with 2.77% (95% CI 0.39–5.20) at lag 07. When the DTR (lag02) was 6.57 °C to 11.03 °C, the relative risk was significant at 6.01% (95% CI 2.45–9.69) for every 1 °C increase in youth subjects aged for 6 to 18 years. Conclusions DTR was associated with a higher risk for ER visits for URI. In addition, the results suggested that the lag effects and relative risks of DTR on URI were quite different according to age.

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