Table 1.

Demographics, neuropsychological, and behavioral n-back data.

	CA			BrainAGE			Years of education			MOCA			Accuracy (%)									Latency (ms)
					0-back			1-back			2-back			0-back			1-back			2-back
	ε4 (n = 12)	Non-ε4 (n = 22)	All (n = 34)	ε4	Non-ε4	All	ε4	Non-ε4	All	ε4	Non-ε4	All	ε4	Non-ε4	All	ε4	Non-ε4	All	ε4	Non-ε4	All	ε4	Non-ε4	All	ε4	Non-ε4	All	ε4	Non-ε4	All
Mean	67.75	69.41	68.82	-0.07	-0.67	-0.46	14.58	14.86	14.82	26.50	27.23	27.00	98.14	99.30	98.98	86.42	93.32	98.80	75.33	79.91	78.29	613	620	618	797	819	811	968	983	978
SD	6.72	4.47	5.33	4.62	3.92	4.12	2.88	3.47	3.26	1.38	2.20	1.98	2.00	1.12	1.50	14.54	7.68	1.92	16.63	13.33	14.50	126	81	98	211	149	171	278	182	217
min	61.00	61.00	61.00	-4.70	-8.29	-8.29	10.00	7.00	7.00	24.00	24.00	24.00	95.00	97.00	95.00	60.00	68.00	60.00	42.00	38.00	38.00	467	478	467	493	622	493	623	614	614
max	80.00	75.00	80.00	10.00	6.84	10.00	18.00	20.00	20.00	28.00	30.00	30.00	100.00	100.00	100.00	100.00	100.00	100.00	92.00	98.00	98.00	893	850	893	1,184	1,186	1,186	1,508	1,342	1,508
p*	0.39			0.69			0.81			0.31			0.12			0.23			0.39			0.84			0.73			0.85

The last row contains p-values resulting from independent t-tests or Mann–Whitney U-tests assessing differences between ε4 and non-ε4 carriers.

CA, chronological age; MOCA, Montreal Cognitive Assessment;

^*p represents the p-values after the assessment of differences between ε4 and non-ε4 carriers.