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Table 2 Time intervals for four aspects of the emergency response with time ranges, median time interval and IQR

From: Systematic reporting to improve the emergency medical response to major incidents: a pilot study

Time Interval

Range (min)

Median (min)

IQR (min)

Major incident occurred to arrival of first EMS

6–95

15.5

11.5–63

Major incident occurred to major incident declared

16–72

51

25–66

Major incident occurred to time of initial communication between emergency services

1–90

42.5

17–61

Arrival of first EMS to major incident declared*

10–30

18

15–25

  1. IQR Inter Quartile Range
  2. * Does not include results for the two reports in which a major incident was declared before arrival of EMS