Difficulties of defining the term, “heat wave”, in public health

Montero, Juan Carlos; Mirón, I.J.; Criado, Juan José; Linares, Cristina; Díaz, Julio

doi:10.1080/09603123.2012.733941

Cited by 28 publications

(17 citation statements)

References 10 publications

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“…The results obtained in this paper indicate that in some cases it is preferable to address temperature and relative humidity separately. This aspect is fundamental when it comes to defining heat and cold waves (Montero et al 2013) and, by extension, estimating their respective effects (Tong et al 2010a, b).…”

Section: Discussionmentioning

confidence: 99%

Impact of heat and cold waves on circulatory-cause and respiratory-cause mortality in Spain: 1975–2008

Linares

Díaz

Tobías

et al. 2014

Stoch Environ Res Risk Assess

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Few studies have analysed the impact of heat and cold waves on mortality in a given population over the same time period and still fewer studies have analysed this impact in terms of cause-specific mortality. This study analysed the impact of both heat and cold waves on daily all-cause, circulatory-cause and respiratory-cause mortality in the region of Castile-La Mancha (CLM) 1975-2008. The dependent variable was daily all-, circulatory-and respiratory-cause mortality registered in CLM from 01-01-75 to 31-12-08, and the independent variables were maximum, minimum, mean daily temperature daily relative humidity and mean daily air pressure and other related variables, such as heat-wave duration, heat-wave number and pressure trend. Time-series analyses were performed using autoregressive integrated moving average models. The impact of heat on daily mortality was greater than that of cold, with a difference which proved statistically significant for all-and circulatory-cause mortality but not for respiratory-cause mortality. While 16.5 % CI 95 % (15.5-17.4) of summer mortality in CLM was attributable to heat, 12.9 % CI 95 % (12.2-13.8) of daily winter mortality was attributable to low temperatures. The variable, heat-wave duration, was of major importance in all-cause and respiratory-cause mortality, with wave persistence being related to a mean 3.5 % increase in daily organic-cause mortality. Although heat waves have a greater impact on daily mortality than do cold waves, the fact that there were more cold-wave than heatwave days during the period analysed, coupled with the diseases implicated, means that specific prevention plans should be implemented for both extreme thermal events.

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Section: Discussionmentioning

confidence: 99%

Impact of heat and cold waves on circulatory-cause and respiratory-cause mortality in Spain: 1975–2008

Linares

Díaz

Tobías

et al. 2014

Stoch Environ Res Risk Assess

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“…Threshold temperatures have also been established, above which mortality is seen to rise sharply. Moreover, such threshold temperature has come to be viewed as the benchmark from which a heat wave can be considered to be present, though this continues to be a controversial aspect from a public health standpoint (Montero et al 2013). This threshold also varies according to the geographical setting of the study, so that the maximum temperature would be 36.5°C for Madrid (Diaz et al 2006a), 33.5°C for Lisbon (Dessai 2002), 32°C for Paris (Pascal et al 2013) or 41.7°C (apparent temperature) for Phoenix (Harlan et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Changes in cause-specific mortality during heat waves in central Spain, 1975–2008

et al. 2014

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The relationship between heat waves and mortality has been widely described, but there are few studies using long daily data on specific-cause mortality. This study is undertaken in central Spain and analysing natural causes, circulatory and respiratory causes of mortality from 1975 to 2008. Time-series analysis was performed using ARIMA models, including data on specific-cause mortality and maximum and mean daily temperature and mean daily air pressure. The length of heat waves and their chronological number were analysed. Data were stratified in three decadal stages: 1975-1985, 1986-1996 and 1997-2008. Heat-related mortality was triggered by a threshold temperature of 37 °C. For each degree that the daily maximum temperature exceeded 37 °C, the percentage increase in mortality due to circulatory causes was 19.3 % (17.3-21.3) in 1975-1985, 30.3 % (28.3-32.3) in 1986-1996 and 7.3 % (6.2-8.4) in 1997-2008. The increase in respiratory cause ranged from 12.4 % (7.8-17.0) in the first period, to 16.3 % (14.1-18.4) in the second and 13.7 % (11.5-15.9) in the last. Each day of heat-wave duration explained 5.3 % (2.6-8.0) increase in respiratory mortality in the first period and 2.3 % (1.6-3.0) in the last. Decadal scale differences exist for specific-causes mortality induced by extreme heat. The impact on heat-related mortality by natural and circulatory causes increases between the first and the second period and falls significantly in the last. For respiratory causes, the increase is no reduced in the last period. These results are of particular importance for the estimation of future impacts of climate change on health.

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“…Como variable independiente se utilizó la temperatura máxima diaria por ser la que en Madrid presentó una mayor asociación con la mortalidad. Estos datos se registraron en el Observatorio de Madrid-Retiro y se utilizaron como referencia en estudios previos 7 , siendo suministrados por la Agencia Estatal de Meteorología (AEMET).…”

Section: Materials Y Métodosunclassified

“…Aunque existen dificultades para la definición de lo que se denomina ola de calor en salud pública, la utilizada en este estudio es la que se basa en trabajos epidemiológicos previos realizados para Madrid, que definen la ola de calor como la situación que ocurre durante uno o más días durante los que la temperatura máxi-ma diaria supera la temperatura umbral de disparo de la mortalidad (TUD), determinada en 36,5 ºC, a partir de la cual la mortalidad se incrementa abruptamente 7 .…”

Section: Materials Y Métodosunclassified

Análisis del impacto de las olas de calor sobre la mortalidad de la ciudad de Madrid durante el período 1990-2009

Culqui

Díaz

Simón

et al. 2013

Rev. Esp. Salud Publica

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RESUMENFundamentos: Después de la ola de calor del año 2003 muchos países europeos implementaron planes para la vigilancia y control de los efectos de las olas de calor (PVCEOC), sin embargo, son pocos los países que han evaluado su impacto. El objetivo de trabajo es evaluar el impacto del PVEOC en la mortalidad atribuida al calor.Método: Para evaluar en la ciudad de Madrid la mortalidad atribuida al calor durante el período 1990-2009 se realizó un análisis de series temporales utilizando modelos ARIMA con una variable exógena, la temperatura.Se analizó el impacto de las altas temperaturas sobre la mortalidad antes y después de 2004, año de la implementación del PVCEOC. Conclusiones: Con la metodología utilizada no se puede afirmar que en Madrid la puesta en marcha del PVEOC se traduzca en una disminución de la mortalidad atribuible a las altas temperaturas .

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Difficulties of defining the term, “heat wave”, in public health

Cited by 28 publications

References 10 publications

Impact of heat and cold waves on circulatory-cause and respiratory-cause mortality in Spain: 1975–2008

Impact of heat and cold waves on circulatory-cause and respiratory-cause mortality in Spain: 1975–2008

Changes in cause-specific mortality during heat waves in central Spain, 1975–2008

Análisis del impacto de las olas de calor sobre la mortalidad de la ciudad de Madrid durante el período 1990-2009

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