BMC Emergency Medicine

Table 2 Inter-rater reliability of Time-related variables in the FinnHEMS database

From: The reliability and accuracy of operational system data in a nationwide helicopter emergency medical services mission database

Time variable^a	Percent agreement, %	Free-marg. K [CI 95%]
Emergency call	71	0.56 [0.37, 0.75]
HEMS unit dispatch	82	0.73 [0.46, 1.00]
HEMS unit en route	98	0.98 [0.95, 1.00]
On scene	99	0.99 [0.96, 1.00]
At patient	88	0.76 [0.53, 1.00]
Start of transportation	96	0.93 [0.88, 0.98]
Arrival at hospital	80	0.61 [0.26, 0.96]
Mission end	85	0.70 [0.44, 0.95]
HEMS unit free of mission	95	0.93 [0.87, 0.99]
Mission cancellation	89	0.83 [0.51, 1.00]

^aThe point of time in the mission, registered in the FinnHEMS database by a participating, attending physician or paramedic, based on the provided documents (Additional file 1)

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ISSN: 1471-227X

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