Skip to main content

Table 2 Percentage agreement and Kappa co-efficient of frailty assessments

From: Utility and reliability of the Clinical Frailty Scale in patients scheduled for major vascular surgery: a prospective, observational, multicentre observer-blinded study

Paired background Percentage agreement P(a) Kappa statistics (k) Z P value
Researcher EFS and consultant CFS 87.6% 0.53 0.52 < 0.001
Researcher EFS and nurse CFS 87.6% 0.50 4.92 < 0.001
Consultant CFS and nurse CFS 89.7% 0.61 5.99 < 0.001
  1. EFS Researcher Edmonton Frailty Scale assessment compared to the pre-assessment consultant, CFS Clinical Frailty Scale assessment; researcher Edmonton Frailty Scale assessment compared to staff nurse Clinical Frailty Scale assessment: and consultant Clinical Frailty Scale assessment compared to Staff Nurse Clinical Frailty Scale assessment across both hospital sites. Levels of agreement using the Kappa coefficient values were set at < 0 = no agreement; 0–0.20 =slight agreement; 0.21–0.40 = fair agreement; 0.41–0.60 = moderate agreement; 0.61–0.80 = substantial agreement; 0.81–1.0 = almost perfect agreement