Table 2. Table showing the model-based kappa of agreement and kappa of association for the rating provided by different groups of raters. The figures in parentheses represent the 95% CI of the estimate.

Variable	Parameter	Kappa of Agreement	Kappa of Association
Age group	0–33 years	0.15 (0.07–0.23)	0.33 (0.18–0.48)
	>33 years	0.18 (0.09–0.27)	0.38 (0.23–0.53)
Gender	Male	0.19 (0.10–0.29)	0.40 (0.25–0.56)
	Female	0.12 (0.05–0.19)	0.28 (0.14–0.42)
Years of oncology experience	0–3.75 years	0.14 (0.06–0.21)	0.31 (0.16–0.45)
	>3.75 years	0.18 (0.09–0.26)	0.38 (0.22–0.53)
Work type	Consultant	0.21 (0.11–0.30)	0.43 (0.27–0.58)
	Non-consultant physician	0.18 (0.09–0.26)	0.37 (0.22–0.53)
	Nurse	0.12 (0.05–0.20)	0.28 (0.14–0.42)
International work experience	Yes	0.02 (0.00–0.04)	0.05 (0.01–0.10)
	No	0.15 (0.07–0.24)	0.34 (0.19–0.49)
Interpretation of ECOG	Subjectivity present	0.15 (0.07–0.24)	0.34 (0.19–0.49)
	No subjectivity	0.16 (0.07–0.24)	0.34 (0.19–0.49)