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Table 3 Inter-rater agreement shown by Kendall’s coefficient of concordance

From: Assessing bystander first aid: development and validation of a First Aid Quality Assessment (FAQA) tool

 

Kendall’s W

Concordance

Airway management

0,660

Good agreement (0,61–0,80)

Bleeding control

0,975

Very good agreement (> 0,80)

Recovery position

0,838

Very good agreement (> 0,80)

Hypothermia prevention

0,801

Very good agreement (> 0,80)

Overall quality of first aid measures

0,570

Moderate agreement (0,41- 0,60)

  1. Kendall’s W ranges from 0 to 1, where 1 represent identical ratings [9]