Table 3. Exact agreement and rank correlation according to expertise and years of experience.

Value	Expert	Other	p value	≤5 years	>5 years	p value
	n = 12	n = 29		n = 32	n = 9
Fleiss' kappa (κ)	0.444	0.479	0.444	0.460	0.501	0.431
Kendall's W	0.887	0.837	0.0531	0.844	0.876	0.294
Kendall's tau (τ)	0.783	0.802	0.274	0.797	0.796	0.944

Fleiss' kappa: exact inter-rater agreement; Kendall's W: relative agreement among raters; Kendall's tau: relative agreement with a standard value