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Table 3 Quadratic-weighted Cohen’s κ values of interobserver agreement for each pair of the five readers

From: Chest x-ray severity score in COVID-19 patients on emergency department admission: a two-centre study

  Centre 1 reader 1    
Centre 1 reader 1 - Centre 1 reader 2   
Centre 1 reader 2 0.764 (0.712–0.816) - Centre 2 reader 1  
Centre 2 reader 1 0.528 (0.473–0.582) 0.618 (0.554–0.682) - Centre 2 reader 2
Centre 2 reader 2 0.478 (0.421–0.535) 0.615 (0.546–0.684) 0.834 (0.800–0.869) -
Centre 2 reader 3 0.449 (0.387–0.511) 0.579 (0.503–0.656) 0.792 (0.739–0.844) 0.872 (0.834–0.910)
  1. Values in parentheses represent the lower and upper 95% confidence interval