Table 3.

Agreement among experts (expressed as W, Kendall's coefficients of concordance, for welfare scores given to the 11 housing systems and to the 18 hazards in the questionnaire), and agreement between experts and EFSA report (expressed as Rho, Spearman's rank correlation coefficients, between median expert scores and hazard/risk characterisation)

	Housing systems			Hazards			Hazards		Housing systems
Type of expert							HC		Median RC		Total RC
	W	P	n	W	P	n	Rho	P	Rho	P	Rho	P
All experts	0.29	0.00	18	0.18	0.00	21	0.47	0.06	-0.54	ns	-0.45	ns
Ethologists	0.23	0.01	9	0.11	0.04	9	0.28	ns	-0.03	ns	-0.22	ns
Veterinarians	0.10	ns	5	0.09	ns	7	0.57	0.02	-0.68	0.05	-0.36	ns
Mixed background	0.15	ns	4	0.34	0.00	5	0.66	0.01	0.13	ns	-0.08	ns

P: significance level; ns: not significant; n: number of experts without missing values; HC: Hazard Characterisation; RC: Risk Characterization.