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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)

From: Expert opinion as 'validation' of risk assessment applied to calf welfare

 

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

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