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Section Six: Time and On-Scene Performance <br /> <br />Task Time - the total time interval from notification time through termination of the incident. It <br />reflects the period of time response resources are committed and unavailable for other service <br />requests. <br /> <br />Response Time -- includes the elements of responding to an incident that are directly under the <br />control of the Fire & EMS Department (i.e., Tumout Time plus Travel Time) <br /> <br />Customer Time - Eugene Fire & EMS has developed this interval measure as an indicator of <br />the calling party's perception of the emergency response system. It includes those factors that <br />reflect the performance of the entire response system, whether or not the department directly <br />controls those elements. This interval adds the call processing interval to the response time <br />interval. <br /> <br />Time Methodology Description <br /> <br />There are two basic components to a performance standard. The first is the measurable task, <br />e.g., response time. The second part is the level of performance. This is normally stated in terms <br />of an average or a percentage (fractile) of the amount of such tasks that fall at or below the <br />desired level, e.g., 80%. <br /> <br />Using this evaluation methodology, an organization can clearly articulate its performance <br />standards and goals in a manner that is easily understood. For example, the statement, "The fire <br />apparatus will leave the station within 60 seconds of alarm activation, at least 75% of the time," <br />is a performance goal that can clearly be understood by everyone. <br /> <br /> Performance can be measured in a number of ways, including average (mean), fractile, and <br /> median (center value). While average times have some utility, they are not wholly useful <br /> measures of performance unless coupled with some measures which describe the "shape" of the <br /> performance curve, such as variances or standard deviation. Two fire departments can report the <br /> same "average" response time, yet the two communities can receive vastly different services. <br /> For example, City A, with a 4-minute average response time, could have response times falling <br /> somewhere between 3 and 5 minutes. City B, with the same 4-minute average response time, <br /> could have a few calls with a response time of less than one minute and some calls with a <br /> response time of 10 minutes or longer. Thus, the use of"averages" has the effect of concealing, <br /> rather than clearly demonstrating, true response performance for an agency. <br /> <br /> The following definitions will help complete the analysis picture: <br /> <br /> Average - Also known as the mean, it is calculated by adding all of the times and dividing by <br /> the total number of incidents. <br /> <br /> 80th and 85% Percentiles - These are the interval times in 80% and 85% of all incidents <br /> respectively. <br /> <br /> While no single measure tells the entire story, Eugene Fire & EMS has chosen to use fractile <br /> measures in its performance standards because they represent the large majority of tasks <br /> <br /> 57 <br /> <br /> <br />