SynthesisBMC public health2023
Impacts of exposure to humidex on cardiovascular mortality: a multi-city study in Southwest China.
Synthesis in BMC public health, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- The impact of humidex on other infectious diarrhea: a study of seasonal heterogeneity and lagged effects using a distributed lag non-linear model.BMC public health · 2026Article
- Projected cardiovascular mortality attributable to extreme temperatures under climate scenarios in Taiyuan, China.iScience · 2026Article
- Increasing physical work capacity losses due to heat stress increase.International journal of biometeorology · 2025Article
- The impact of high humidex on the risk of hospital admissions for urinary system diseases in Lanzhou, China: A time-series analysis.iScience · 2025Article
- Nonlinear effects of humidex on risk for asthenopia among adults: a national cross-sectional survey in China.Frontiers in public health · 2025Article
- Association of Exposure to Humidex with Schizophrenia Admissions in Qingdao, China: A Time-Series Study.Neuropsychiatric disease and treatment · 2025Article
- The Association Between Humidex and Daily Outpatient Visits for Pediatric Respiratory Diseases in Shijiazhuang, China: A Time Series Analysis.International journal of public health · 2025Article
- Bayesian spatial-temporal analysis and determinants of cardiovascular diseases in Tanzania mainland.BMC medical research methodology · 2024Article
- Assessing the impact of temperature on acute exacerbation of chronic obstructive pulmonary disease hospitalizations in residents of Panzhihua City: a multi-districts study using a distributed lag non-linear model.BMC public health · 2024Article
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13 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundMany studies have reported the association between ambient temperature and mortality from cardiovascular disease (CVD). However, the health effects of humidity are still unclear, much less the combined effects of temperature and humidity. In this study, we used humidex to quantify the effect of temperature and humidity combined on CVD mortality.
methodsDaily meteorological, air pollution, and CVD mortality data were collected in four cities in southwest China. We used a distributed lag non-linear model (DLNM) in the first stage to assess the exposure-response association between humidex and city-specific CVD mortality. A multivariate meta-analysis was conducted in the second stage to pool these effects at the overall level. To evaluate the mortality burden of high and low humidex, we determined the attributable fraction (AF). According to the abovementioned processes, stratified analyses were conducted based on various demographic factors.
resultsHumidex and the CVD exposure-response curve showed an inverted "J" shape, the minimum mortality humidex (MMH) was 31.7 (77th percentile), and the cumulative relative risk (CRR) was 2.27 (95% confidence interval [CI], 1.76-2.91). At extremely high and low humidex, CRRs were 1.19 (95% CI, 0.98-1.44) and 2.52 (95% CI, 1.88-3.38), respectively. The burden of CVD mortality attributed to non-optimal humidex was 21.59% (95% empirical CI [eCI], 18.12-24.59%), most of which was due to low humidex, with an AF of 20.16% (95% eCI, 16.72-23.23%).
conclusionsLow humidex could significantly increase the risk of CVD mortality, and vulnerability to humidex differed across populations with different demographic characteristics. The elderly (> 64 years old), unmarried people, and those with a limited level of education (1-9 years) were especially susceptible to low humidex. Therefore, humidex is appropriate as a predictor in a CVD early-warning system.
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