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Table 1 Comparison of modeled time and assumptions with actual EMS time intervals*

From: A validation of ground ambulance pre-hospital times modeled using geographic information systems

(n)

Inside City (29765)

Outside City (529)

 

Model Time**

Actual Time

Model Time**

Actual Time

Activation

1.4

1.7 (1.3-2.2)

2.9

2.1 (1.6-2.9)

Response

4.4 (3.2-5.9)

4.9 (3.5-6.7)

5.3 (4.3-7.0)

10.9 (8.9-13.6)

On-scene

13.5

21.6 (15.9-27.9)

15.1

22.1 (16.8-28.2)

Transport

7.3 (5.3-9.9)

13.3 (9.5-18.0)

13.1 (10.8-17.5)

20.0 (15.5-26.5)

    Total

26.5 (23.3-30.7)

43.3 (35.7-51.9)

36.4 (33.2-42.5)

57.6 (49.4-67.2)

  1. * All times are in minutes expressed as Median (Interquartile Range).
  2. ** Model times are the assumptions from meta-analysis for Activation and On-scene intervals and GIS derived times for Response and Transport intervals.