Shiraz Vered1, Shlomit Paz2, Maya Negev1, David Tanne3, Inbar Zucker4, Galit Weinstein5. 1. School of Public Health, Faculty of Social Welfare and Health Sciences, University of Haifa, Haifa, Israel. 2. Department of Geography and Environmental Studies, University of Haifa, Haifa, Israel. 3. Stroke and Cognition Institute, Rambam Health Care Campus, Haifa, Israel. 4. School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; The Israel Center for Disease Control, Israel Ministry of Health, Ramat-Gan, Israel. 5. School of Public Health, Faculty of Social Welfare and Health Sciences, University of Haifa, Haifa, Israel. Electronic address: gweinstei@univ.haifa.ac.il.
Abstract
OBJECTIVE: To examine whether high ambient temperature and diurnal temperature range during the summer are associated with risk of stroke/transient ischemic attack (TIA). METHODS: A time-stratified case-crossover study design was conducted. The study sample comprised all individuals aged ≥50 years who had a stroke/TIA reported to the Israeli National Stroke Registry between 2014 and 2016 during the summer season. Daily temperature data were retrieved from the Israel Meteorological Service. Conditional logistic regression models were used with relative humidity and air pollution as covariates. RESULTS: The sample included 15,123 individuals who had a stroke/TIA during the summer season (mean age 73 ± 12 years; 54% males). High ambient temperature was associated with stroke/TIA risk starting from the day before the stroke event, and increasing in strength over a six-day lag (OR = 1.10 95%CI 1.09-1.12). Moreover, a larger diurnal temperature range prior to stroke/TIA occurrence was associated with decreased stroke/TIA risk (OR = 0.96 95%CI 0.95-0.97 for a six-day lag). CONCLUSIONS: High ambient temperature may be linked to increased risk of cerebrovascular events in subsequent days. However, relief from the heat during the night may attenuate this risk.
OBJECTIVE: To examine whether high ambient temperature and diurnal temperature range during the summer are associated with risk of stroke/transient ischemic attack (TIA). METHODS: A time-stratified case-crossover study design was conducted. The study sample comprised all individuals aged ≥50 years who had a stroke/TIA reported to the Israeli National Stroke Registry between 2014 and 2016 during the summer season. Daily temperature data were retrieved from the Israel Meteorological Service. Conditional logistic regression models were used with relative humidity and air pollution as covariates. RESULTS: The sample included 15,123 individuals who had a stroke/TIA during the summer season (mean age 73 ± 12 years; 54% males). High ambient temperature was associated with stroke/TIA risk starting from the day before the stroke event, and increasing in strength over a six-day lag (OR = 1.10 95%CI 1.09-1.12). Moreover, a larger diurnal temperature range prior to stroke/TIA occurrence was associated with decreased stroke/TIA risk (OR = 0.96 95%CI 0.95-0.97 for a six-day lag). CONCLUSIONS: High ambient temperature may be linked to increased risk of cerebrovascular events in subsequent days. However, relief from the heat during the night may attenuate this risk.
Authors: Sebastian T Rowland; Lawrence G Chillrud; Amelia K Boehme; Ander Wilson; Johnathan Rush; Allan C Just; Marianthi-Anna Kioumourtzoglou Journal: Environ Res Date: 2021-10-23 Impact factor: 6.498
Authors: Shinji Otani; Satomi Funaki Ishizu; Toshio Masumoto; Hiroki Amano; Youichi Kurozawa Journal: Int J Environ Res Public Health Date: 2021-02-09 Impact factor: 3.390