Table 2.

Agreement between each pair of extra-prostatic cancer raters ${\mathcal{R}}_1$ vs ${\mathcal{R}}_2$, ${\mathcal{R}}_1$ vs ${\mathcal{R}}_3$, and ${\mathcal{R}}_2$ vs ${\mathcal{R}}_3$, both in the dichotomous and in the multi-valued case, expressed by the IA. The last column contains Cohen’s κ values

Raters	IA dichotomous	IA multi-valued	Cohen’s κ
${\mathcal{R}}_1$ vs ${\mathcal{R}}_2$	0.259	0.361	0.558
${\mathcal{R}}_1$ vs ${\mathcal{R}}_3$	0.490	0.337	0.741
${\mathcal{R}}_2$ vs ${\mathcal{R}}_3$	0.222	0.263	0.487