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Table 4 The inter-rater agreement between reviewers in determining definitely versus probably preventable events, by assessment method

From: Methods for evaluating adverse drug event preventability in emergency department patients

Preventability Definition

Inter-rater Agreement

Kappa (95% CIs)

Best Practice-Based [4] (n = 869)

0.33 (0.23–0.44)

Error -Based [23] (n = 873)

0.30 (0.20–0.40)

Algorithm-Based [24](n = 930)

0.40 (0.33–0.46)