Table 2. Results of the one-way analysis of covariance.

variable	group	Adjusted means (atBW = 8.26)± SEM	Equality of the adjusted means	Common regression coefficient	p-value	equalitiy of slopes: estimates	equalitiy of slopes: p-values	r /R2
Relative GM volume	1	0.7645(±0.0016)	p = 0.061	-0.0041	<0.0001	-0.0043	0.344	0.919/0.844
Relative GM volume	2	0.7601(±0.0017)				-0.0038		0.809/0.654
Relative WM volume	1	0.1767(±0.0018)	p<0.0001	0.0033	< 0.0001	0.0037	0.172	0.843/0.71
Relative WM volume	2	0.1326(±0.0019)				0.0028		0.698/0.487
Relative CSF volume	1	0.0597(±0.0017)	p<0.0001	0.0010	0.002	0.0008	0.489	0.441/0.194
Relative CSF volume	2	0.1071(±0.0018)				0.0012		0.352/0.123
WM/GM ratio	1	0.2320(±0.0027)	p<0.0001	0.0055	< 0.0001	0.0063	0.052	0.875/0.765
WM/GM ratio	2	0.1736(±0.0028)				0.0044		0.729/0.531

The table presents the results of the analysis of covariance testing the equality of slopes from the regression to the body weight (BW), the global relevance of the BW as a covariate (common slope different from zero) and the equality of adjusted means at mean BW = 8.26 kg between the groups. The adjusted means are presented including the standard error of means (SEM)