You are evaluating inter-rater reliability for two nurse ane…

You are evaluating inter-rater reliability for two nurse anesthetists assessing the Mallampati score in 50 patients. The observed agreement (Po) between the two raters is 0.84. The expected agreement (Pe), based on chance, is 0.60. Calculate Cohen’s kappa (K).K= (Po−Pe) / (1 – Pe)