Interrater agreement of two adverse drug reaction causality assessment methods: A randomised comparison of the Liverpool Adverse Drug Reaction Causality Assessment Tool and the World Health Organization-Uppsala Monitoring Centre system | PLOS
Cohen's Kappa Statistic: Definition & Example - Statology
Inter-rater agreement (kappa)
Kappa Coefficient - an overview | ScienceDirect Topics
Cohen's kappa with three categories of variable - Cross Validated