• Mikkel Brabrand, Peter Hallas, Lars Folkestad, Cecilie Hovitz Lautrup-Larsen, and Jacob Broder Brodersen.
• Department of Emergency Medicine, Odense University Hospital, Sdr. Boulevard 29, DK-5000 Odense C, Denmark; Department of Emergency Medicine, Hospital of South West Jutland, Finsensgade 35, DK-6700 Esbjerg, Denmark. Electronic address: mikkel.brabrand@rsyd.dk.
• J Crit Care. 2018 Apr 1; 44: 404-406.

ObjectiveTo evaluate the inter-observer reliability of nurses assessing respiratory rate.MethodsWe presented seven minimum 60-seconds long videos of thoraces of non-identifiable patients breathing to experienced nurses from several Danish emergency departments. Two videos were assessed by 50 raters while five were reviewed by eight. The videos were shown using an online system that also recorded the counted respiratory rate.ResultsA total of 140 nurses participated with a median of 15years' experience. The range of counted respiratory rate was minimum 10 on each video. For videos evaluated by eight nurses, average Inter Class Coefficient (ICC) was 0.662 (0.000-0.960) and individual ICC 0.197 (0.000-0.750). For the two case-videos analyzed by 50 nurses, average ICC was 0.0 (0.000-0.991) and individual ICC 0.0 (0.000-0.677).ConclusionsWe found a wide variation in measurements of RR with both few and many observers assessing exactly the same patients.Copyright © 2018 Elsevier Inc. All rights reserved.

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