Table 4.

ANCOVA model details for between groups analysis.

	Sum of squares (Typ III)	df	Mean squares	F	Significance	η2	Partial η2
Corrected model	5,882,377.33	7	840,339.618	11.003	< 0.001		0.383
Constant term	9,327,886.03	1	9,327,886.03	122.130	< 0.001		0.496
Cluster	1,088,735.90	3	362,911.97	4.752	0.004⁎	0.071	0.103
Age	6681.42	1	6681.42	0.087	0.768	< 0.001	0.001
Sex	833,600.24	1	833,600.24	10.914	0.001⁎	0.054	0.081
ICV	1,356,312.68	1	1,356,312.68	17.758	< 0.001⁎	0.088	0.125
scanner	519,145.23	1	519,145.23	6.797	0.010⁎	0.034	0.052
Error	9,470,732.19	124	76,376.87
Total	1,647,001,109.00	132
Corrected total variation	15,353,109.51	131

^⁎= p < 0.05;

ANCOVA model formulation:

hippo_vol = 2534.54 − 69.89^∗ clust₁ − 167.43^∗ clust₂ + 124.29^∗ clust₃ + 0.70^∗ age + 200.56^∗ sex + 0.001^∗ ICV + 159.60^∗ scanner.