Modelling seasonal and weather dependency of cardiac arrests using the covariate order method

In the analyses a significant relationship between outdoor air temperature, or factors closely related to outdoor air temperature, and the occurrence of cardiac arrest is found. The incidence of cardiac arrest decreases with increasing temperature. Further a significant effect of snowfall is also found, with increased intensity of cardiac arrest on days with snowfall. A more borderline significant effect of precipitation is also identified. Copyright (C) 2006 John Wiley & Sons, Ltd.