Table 1. Results of PLS analyses.

Samples used	RV coefficient	P-value	% Total Cov PLS1	Corr PLS1	P-value
All groups	0.72 (0.39)	0.0001 (0.0001)	96.2% (90.3%)	0.92 (0.75)	0.0001 (0.0001)
Both NON-MUT	0.19 (0.16)	0.0364 (0.3312)	56.9% (34.7%)	0.60 (0.57)	0.0314 (0.5745)
Both MUT	0.40 (0.36)	0.0001 (0.0001)	70.0% (69.4%)	0.82 (0.77)	0.0001 (0.0001)
252 NON-MUT/MUT	0.83 (0.51)	0.0001 (0.0001)	96.2% (91.4%)	0.94 (0.74)	0.0001 (0.0001)
253 NON-MUT/MUT	0.71 (0.40)	0.0001 (0.0001)	97.1% (84.8%)	0.93 (0.77)	0.0001 (0.0001)

For each grouping we provide the RV coefficient of overall integration between the face and the neurocranium and associated P-value; the percentage of total covariation explained by PLS1 axes; the correlation score between facial and neurocranial PLS1 scores and associated P-value. Values in parentheses correspond to results obtained after adjusting for allometric effects.