The effect of diurnal temperature range on blood pressure among 46,609 people in Northwestern China

Zheng, Shan; Zhu, Wenzhi; Wang, Minzhen; Shi, Quan; Luo, Yan; Miao, Qing; Nie, Yonghong; Feng, Kai; Mi, Xiuying; Bai, Yana

doi:10.1016/j.scitotenv.2020.138987

Cited by 50 publications

(36 citation statements)

References 51 publications

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“…Another study showed that temperature change between neighboring days (TCN) can increase the number of emergency department for hypertension [25]. In the current study, we found that temperature variability was positively related to SBP, which is consistent with a previous study [11]. The mechanism of temperature variability on SBP is unclear to date.…”

Section: Discussionsupporting

confidence: 89%

“…However, the evidence on the associations between temperature variability and BP are limited and inconsistent. For instance, Zheng et.al found that DTR was positively associated with SBP, and negatively associated with DBP in northwest China [11]. However, Lim at.al found that BP had null associations with DTR in Seoul, Korea [12].…”

Section: Read Full License 1 Introductionmentioning

confidence: 99%

“…Therefore, it is unknown whether temperature variability within different exposure days has various association with BP. Thirdly, the research sites in the two studies were in high latitude and temperate areas [11,12], and it is necessary to conduct more studies in different climate zones to better understand the spatial heterogeneity of the effects of temperature variability on BP.…”

Section: Read Full License 1 Introductionmentioning

confidence: 99%

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The Association of Temperature Variability With Blood Pressure in Southern China: a Series of Cross-sectional Studies in Guangdong Province, China

Meng

Luo

et al. 2021

Preprint

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Background: Numerous studies have found a positive relationship between temperature variability and mortality, but few studies regarding the effects of temperature variability on blood pressure (BP) are available.Objective: To investigate the effects of temperature variability on BP in Guangdong province, southern China.Methods: Data on Meteorology and BP in Guangdong Province from 2004 to 2015 were collected from Guangdong Provincial Center for Disease Control and Prevention. There were 38088 participants aged 18 years and over. The generalized additive model (GAM) was used to estimate the relationship between temperature variability and BP after adjusting for confounding variables.Result: Our study found that there was a significant positively correlation between temperature variability and systolic blood pressure (SBP), and the estimate increase with the increment of exposure days in total population. The highest estimate was found at 7 days lag with increased 0.497 mmHg of SBP (95%CI: 0.335–0.660) for a 1 °C increase of TV0-7. There was insignificant association between temperature variability and diastolic blood pressure (DBP). The effects of temperature variability on BP among subpopulations with different hypertension statuses were various, and the estimates of Temperature variability with different exposure days on SBP were all higher in known hypertensives than that in normotensives.Conclusion: There was a significant association between temperature variability and SBP in Guangdong province with various effects for different populations. Our findings provide evidence that temperature variability is an independent risk factor for SBP changes, and temperature variability should be considered in hypertension clinic management and epidemiological survey.

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Section: Discussionsupporting

confidence: 89%

Section: Read Full License 1 Introductionmentioning

confidence: 99%

Section: Read Full License 1 Introductionmentioning

confidence: 99%

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The Association of Temperature Variability With Blood Pressure in Southern China: a Series of Cross-sectional Studies in Guangdong Province, China

Meng

Luo

et al. 2021

Preprint

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“…Meanwhile, Yang et al reported that women in Guangzhou (China) were consistently more sensitive to the adverse impact of DTR on total and cardiovascular mortality [ 29 ]. A previous study by Basu et al (2009) has speculated that the differences in the effect of temperature by gender were the result of location and population [ 30 ] That is why the impact of hot temperature on coronary events was greater for men in San Paulo, while greater for women in Mexico City [ 31 ]. Furthermore the research conducted in Europe by Lancet explained that clothing plays a signi cant role in explaining sex difference and that there is a biological difference between gender in the ability to thermoregulate [ 32 ].…”

Section: Discussionmentioning

confidence: 96%

Impact of Diurnal Temperature Range on Cardiovascular Disease Hospital Admissions among Chinese Farmers in Dingxi(the Northwest China)

Zhai

Chai

2021

Preprint

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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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“…In the United States, K. L. et al concluded that a 10 °C decrease in average daily temperature led to a 13% increase in fatal, incident, and recurrent coronary events in California [ 34 ]. A recently published study conducted in Jingchang, Gansu Province, showed a positive linear correlation between DTR with systolic blood pressure and pulse pressure, but a negative linear correlation between DTR with diastolic blood pressure [ 39 ]. These findings have led to speculating that blood pressure triggers the onset of cardiovascular diseases.…”

Section: Discussionmentioning

confidence: 99%

Impact of diurnal temperature range on cardiovascular disease hospital admissions among Chinese farmers in Dingxi (the Northwest China)

Zhai

Chai

2021

BMC Cardiovasc Disord

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Background Diurnal temperature range (DTR) 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. This study aimed to examine the association between DTR and CVD in rural China. Methods A distributed lag nonlinear model was used to evaluate the relationship between DTR and CVD risk among farmers living in the city of Dingxi (Northwest China) in the period from January 1, 2016 to December 31, 2019. Results We observed nonlinear M-patterns between the relative risk (RR) of DTR (reference: median DTR, 12 °C) and CVD hospitalizations in all subgroups. The peak RR of CVD was noticed at DTR of 6 °C (total: 1.418; men: 1.546; women: 1.403; young: 1.778; old: 2.549) and 17 °C (total: 1.781; men: 1.937; women: 1.712; young: 2.233; old: 1.798). The adverse effect of DTR on CVD risk was more pronounced in females (RR 1.438) and elderly (RR 2.034) than males (RR 1.141) and younger adults (RR 1.852) at the extremely low (5th, 4 °C) DTR. The reverse was observed at the extremely high DTR (95th, 19 °C) (male: 1.267; females: 0.993; young: 1.586; old: 1.212). Conclusions DTR is associated with CVD morbidity. This association was more pronounced in women and elderly, but men and younger peoples at extremely high DTR (19 °C). Future measures should take DTR into account to prevent CVD among susceptible populations.

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The effect of diurnal temperature range on blood pressure among 46,609 people in Northwestern China

Cited by 50 publications

References 51 publications

The Association of Temperature Variability With Blood Pressure in Southern China: a Series of Cross-sectional Studies in Guangdong Province, China

The Association of Temperature Variability With Blood Pressure in Southern China: a Series of Cross-sectional Studies in Guangdong Province, China

Impact of Diurnal Temperature Range on Cardiovascular Disease Hospital Admissions among Chinese Farmers in Dingxi(the Northwest China)

Impact of diurnal temperature range on cardiovascular disease hospital admissions among Chinese farmers in Dingxi (the Northwest China)

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