Characterizing MRI features of rectal cancers with different KRAS status

BMC Cancer

Table 4 Inter-observer agreement for variables

Inter-observer agreement for variables
Variable Type	Variable	Kappa value/ICC	95%CI
Categorical	Tumor shape	0.919	0.863-0.974
	circumferential	0.979	0.965-1.0
	T stage	0.935	0.883-0.986
	N stage	0.940	0.898-0.981
	Tumor type	0.804	0.663-0.945
	EMVI	0.729	0.599-0.857
	CRM	0.812	0.694-0.930
Continuous	ADC	0.8542	0.7190-0.9487
	Tumor length	0.9885	0.9838-0.9963
	MEMD	0.9843	0.9643-0.9918
	Mean	0.7448	0.6663-0.8069
	Variance	0.7571	0.6818-0.8159
	Skewness	0.7402	0.6607-0.8032
	Entropy	0.7452	0.6670-0.8072
	GLNU	0.7239	0.6379-0.7916
	RLNU	0.7539	0.6776-0.8141

Inter-observer agreement of categorical variables was evaluated by Kappa or weighted Kappa value, while inter-observer agreement of continuous ones was evaluated by ICC

ISSN: 1471-2407