ArticleEnvironmental epidemiology (Philadelphia, Pa.)2017
Effect of night-time temperatures on cause and age-specific mortality in London.
Article in Environmental epidemiology (Philadelphia, Pa.), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 2 of them syntheses that pooled it.
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Who cites it
54 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- A Systematic Review of Heat Health Warning Systems: Enhancing the Framework Towards Effective Health Outcomes.Current environmental health reports · 2025Pooled it
- Hourly level analysis of the effects of temperature extremes on emergency ambulance calls.Journal of global health · 2025Pooled it
- The Effect of Nighttime Heatwave on Poststroke Disability in Subtropical Cities of China.Environment & health (Washington, D.C.) · 2026Article
- A national-scale assessment of the impact of canals on urban temperatures.Nature communications · 2026Article
- Stroke and climate change: A World Stroke Organization scientific statement.International journal of stroke : official journal of the International Stroke Society · 2026Review
- Local drivers in accelerating North American heat stress.Nature communications · 2026Article
- Exploring age and gender sensitivity to high-temperature days: impacts on respiratory, cardiovascular, and all-cause mortality in summer in Flanders.Archives of public health = Archives belges de sante publique · 2026Article
- Nocturnal warming and emergency department admissions: a nationwide association and projection study in Singapore.BMC emergency medicine · 2026Article
- Daytime and nighttime heatwave intensity and acute care utilization for mental and neurological disorders in California.Environmental research, health : ERH · 2026Article
- Prenatal exposure to extreme heat and autism in children.The Science of the total environment · 2026Article
- Individual and Joint Effect of Particulate Matter and Night-Time Temperature on Sperm Quality: A Large Retrospective Cohort Study in China.Environment & health (Washington, D.C.) · 2026Article
- State-of-Art in Studying the Public Health Effects of Heat: A Literature Review.Global challenges (Hoboken, NJ) · 2025Review
- Article
- Improved High Resolution Heat Exposure Assessment With Personal Weather Stations and Spatiotemporal Bayesian Models.GeoHealth · 2025Article
- Is home where the heat is? comparing residence-based with mobility-based measures of heat exposure in San Diego, California.Journal of exposure science & environmental epidemiology · 2025Article
- Harnessing Geospatial Data for Urban Climate Resilience: Insights from a Fine Scale Ambient Temperature Analysis in an Urban Heat Island.Journal of city climate policy and economy · 2025Article
- Evaluating compliance with HeatSuite for monitoring in situ physiological and perceptual responses and personal environmental exposure.NPJ digital medicine · 2025Article
- Impact of early life exposure to heat and cold on linguistic development in two-year-old children: findings from the ELFE cohort study.Environmental health : a global access science source · 2025Article
- Suitable temperature indicator for adverse health impacts in sub-tropical cities: a case study in Hong Kong from 2010-2019.International journal of biometeorology · 2025Article
- The risk of hospitalization associated with hot nights and excess nighttime heat in a subtropical metropolis: a time-series study in Hong Kong, 2000-2019.The Lancet regional health. Western Pacific · 2024Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundHigh ambient temperatures are associated with an acute increase in mortality risk. Although heat exposure during the night is anecdotally cited as being important, this has not been rigorously demonstrated in the epidemiological literature.
methodsWe quantified the contribution of nighttime temperatures using time-series quasi-Poisson regression on cause and age-specific daily mortality in London between 1993 and 2015. Daytime and nighttime exposures were characterized by average temperatures between 9 am and 9 pm and between 4 am and 8 am, respectively, lagged by 7 days. We also examined the differential impacts of hot and cool nights preceded by very hot days. All models were adjusted for air quality, season, and day of the week. Nighttime models were additionally adjusted for daytime exposure.
resultsEffects from nighttime exposure persisted after adjusting for daytime exposure. This was highest for stroke, RR (relative risk) = 1.65 (95% confidence interval (CI) = 1.27 to 2.14) estimated by comparing mortality risk at the 80th and 99th temperature percentiles. Compared to daytime exposure, nighttime exposure had a higher mortality risk on chronic ischemic and stroke and in the younger age groups. Respiratory mortality was most sensitive to daytime temperatures. Hot days followed by hot nights had a greater mortality risk than hot days followed by cool nights.
conclusionsNighttime exposures make an additional important contribution to heat-related mortality. This impact was highest on warm nights that were preceded by a hot day, which justifies the alert criteria in heat-health warning system that is based on hot days followed by hot nights. The highest mortality risk was from stroke; targeted interventions would benefit patients most susceptible to stroke.
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