Syndromic surveillance use to detect the early effects of heat-waves: an analysis of NHS direct data in England.
OBJECTIVES: To investigate the effects of high ambient temperatures, including the summer 2003 heat-episode, on NHS Direct usage and its suitability as a surveillance tool in heat health warning systems. METHODS: Analyses of data on calls to NHS Direct in English Regions in the period Dec 2001-May 2004. Outcomes were daily rates of all symptomatic calls, and daily proportion of calls for selected causes (fever, vomiting, difficulty breathing, heat/sun-stroke) RESULTS: Total calls were moderately increased as environmental temperature increased; this effect was greatest in calls for young children and for fever. Total calls were moderately elevated during two summer heat episodes in 2003: calls specifically for heat/sun stroke increased acutely in response to these episodes. No association was apparent between environmental temperature and proportion of calls for vomiting and difficulty breathing. CONCLUSIONS: Calls to NHS Direct are sensitive to daily temperatures and extreme weather. NHS Direct is timely and has great potential in health surveillance. Calls for heat- and sun-stroke are now routinely monitored as part of the UK Heat-wave plan
Item Type | Article |
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Keywords | temperature, heat-waves, NHS direct, primary care, surveillance, HOSPITAL ADMISSIONS, MORTALITY, LONDON, EPIDEMIOLOGY, CHICAGO, IMPACT, Adolescent, Adult, Age Factors, Aged, Child, Child, Preschool, Cross-Sectional Studies, Dyspnea, epidemiology, England, Fever, epidemiology, Heat Stroke, epidemiology, Humans, Infant, Infrared Rays, adverse effects, London, Middle Aged, Population Surveillance, State Medicine, utilization, Sunstroke, epidemiology, Temperature, Vomiting, epidemiology |
ISI | 239866400004 |