Table 1. Loadings on the factors extracted by the principal component analysis, after orthogonal rotation, of variables recorded on individual pigs.

Measure	Factor 1	Factor 2	Factor 3
Skin lesions	0.55	0.45	0.04
Body weight	0.60	−0.02	0.10
ΔHaptoglobin	0.09	−0.02	0.92
Aggression given	−0.09	0.80	0.16
Aggression received	0.13	0.75	−0.22
Social nosing given	−0.65	−0.08	0.11
Social nosing received	0.37	−0.36	−0.30
Inactivity	0.78	−0.11	0.03
Eigenvalue	1.85	1.56	1.03
Variance explained (%)	23.5	19.4	12.8

Values between 0.30–0.50 are in italics, values above 0.50 are in bold.