Table 3.

Free recall day 30.

Independent variables/predictors	Beta coefficient	p-value	AIC
tDCS group	0.578	< 0.001	440.8
Education	0.021	0.186	457.5
CRI-total score	0.004	0.337	458.4
CRI-education	0.004	0.365	458.5
CRI-working activity	0.001	0.895	459.3
CRI-leisure time	0.003	0.413	458.6
tDCS timing		0.295 (Global)	458.9
	0.214 (REC vs. CON)	0.618 (REC vs. CON)
	− 0.025 (ENC vs. CON)	1 (ENC vs. CON)
	− 0.238 (ENC vs. REC)	0.484 (ENC vs. REC)
Encoding performance	0.114	< 0.001	439.1
Age	0.005	0.737	459.2

tDCS Group sham reference category, CRI cognitive reserve index, ENC during encoding, CON during consolidation, REC during reconsolidation.

Significant results shown in bold. P-values of pairwise comparisons for tDCS Timing were adjusted using Bonferroni correction.