Table 2

 Inter-rater reliability for all three reviewers for event type

OutcomeFrequency reported by each reviewer, N (%)κ (95% CI)
Reviewer 1Reviewer 2Reviewer 3
ADE, adverse drug event.
Event type
ADE72 (10.3)62 (8.8)44 (6.3)0.73 (0.69 to 0.77)
Potential ADE40 (5.7)156 (22.3)101 (14.4)0.20 (0.00 to 0.40)
Medication error256 (36.5)300 (42.8)254 (36.2)0.38 (0.34 to 0.42)
Rule violation283 (40.4)104 (14.8)221 (31.5)0.42 (0.38 to 0.46)
Other50 (7.1)79 (11.3)81 (11.6)0.37 (0.33 to 0.41)
Overall agreement0.40 (0.38 to 0.42)