Table 4.

p-values for the effect of age, site, and sex on prediction error for the seven models on fold 1.

	BLUP-mean	BLUP-quantiles	SVM	6-layer CNN	Age spe. 6-layer CNN	ResNet	Inception V1
Age	2.9E−10*	5.8E−13*	5.8E−46*	7.3E−10*	2.2E−13*	9.1E−05*	7.7E−20*
Site	3.7E−01	4.4E−02	4.5E−03	2.8E−02	4.3E−02	2.3E−02	5.0E−02
Sex	7.1E−02	1.4E−01	3.6E−02	1.0E+00	8.5E−01	1.0E+00	5.4E−01

^*Significant after correction for multiple comparisons (i.e., p < 0.05/21 or p < 2.3E−3).