TABLE 4.

Sensitivity test–retest analyses with shorter between‐scan intervals.

Method	MAD [years]				ICC (95% CI)
	<1 day	<14 days	<31 days	<365 days	<1 day	<14 days	<31 days	<365 days
brainageR	0.78	0.94	1.16	1.27	~1 (0.99–1.0)	0.99 (0.98–1.0)	0.99 (0.98–0.99)	0.98 (0.98–0.99)
DeepBrainNet	0.6	1.24	1.72	4.25	~1 (1.0–1.0)	0.98 (0.95–0.99)	0.97 (0.94–0.98)	0.57 (0.43–0.68)
brainage	1.68	2.05	1.93	2.32	0.98 (0.9–1.0)	0.95 (0.86–0.98)	0.96 (0.93–0.98)	0.94 (0.92–0.96)
ENIGMA	6.58	5.26	7.0	6.05	0.46 (−0.26 to 0 .86)	0.46 (−0.03 to 0 .78)	0.36 (0.05–0.61)	0.65 (0.53–0.74)
pyment	1.04	0.95	1.01	1.18	~1 (0.98–1.0)	0.99 (0.98–1.0)	0.99 (0.99–1.0)	0.98 (0.98–0.99)
mccqrnn	2.08	1.78	1.67	1.76	0.99 (0.93–1.0)	0.98 (0.96–0.99)	0.98 (0.97–0.99)	0.97 (0.96–0.98)

Note: MAD and ICC values are shown for the predicted brain age.

Abbreviations: ICC, intraclass correlation coefficient; MAD, mean absolute difference.