Host: Eastern Asia Society for Transportation Studies
Pages 4
International Standard requires emergency medical service (EMS) response time to be less than 8 minutes. To reduce the response time for improving the survival rate needs to know the phenomena of EMS call for better management. This article focuses on analyzing the factors of such a problem. A total of 13,871 records from in 2004 were employed to identify the probability distribution of EMS calls and to establish several occurrence probability models. The population data were found to be day dependent; the weekday pattern is different from the weekend pattern. In addition, the data are also time-dependent. Results of Chi-square tests show that the occurrence intervals follow the exponential distribution which means the pattern of EMS calls follows a nonhomogeneous Poisson process.
