Table 2.

Participant's scores in GDS-15 and performance in the neuropsychological factors obtained by factor analysis of the research protocol stratified by group and depression.

Group	Depression	Statistic	GDS-15	Language semantic	Episodic memory	Visuospatial abilities	Executive functions	G-ADL self-care	G-ADL domestic	G-ADL complex	G-ADL general
Normal aging (N = 96)	Non-depressed (N = 62)	M	1.81	0.00	0.00	0.00	0.00	9.92	7.92	7.85	25.69
		SD	1.30	1.00	1.00	1.00	1.00	0.38	0.33	0.51	0.93
		Min-Max	0 to 5	−3.54 to 1.39	−1.60 to 1.14	−2.62 to 1.70	−2.70 to 1.63	8 to 10	6 to 8	5 to 8	20 to 26
	Depressed (N = 34)	M	8.94	−0.99	−0.79	−0.87	−1.63	9.97	7.24	7.00	24.21
		SD	2.80	1.26	0.77	0.99	1.25	0.17	1.28	1.92	3.02
		Min-Max	6 to 15	−3.54 to 1.13	−2.72 to 0.86	−2.46 to 1.12	−5.80 to 0.90	9 to 10	4 to 8	1 to 8	15 to 26
Mild cognitive impairment (N = 85)	Non-depressed (N = 63)	M	2.06	−0.75	−1.30	−0.87	−1.19	10.00	7.41	6.94	24.35
		SD	1.50	1.05	0.73	1.09	1.05	0.00	1.25	1.45	2.28
		Min-Max	0 to 5	−3.52 to 1.05	−2.74 to 0.70	−2.70 to 2.07	−3.70 to 1.00	10 to 10	2 to 8	2 to 8	16 to 26
	Depressed (N = 22)	M	5.45	−0.76	−1.01	−0.76	−1.28	9.95	7.41	6.82	24.18
		SD	4.08	0.67	0.66	0.90	1.09	0.21	1.05	1.56	2.56
		Min-Max	6 to 13	−2.05 to 0.40	−2.19 to 0.35	−2.34 to 0.80	−3.30 to 0.30	9 to 10	5 to 8	3 to 8	18 to 26
Mild Alzheimer's dementia (N = 93)	Non-depressed (N = 66)	M	2.05	−1.74	−1.81	−1.62	−2.44	9.86	5.76	4.53	20.15
		SD	1.39	1.22	0.64	1.06	1.04	0.52	2.11	2.53	4.00
		Min-Max	0 to 5	−3.54 to 0.78	−2.78 to 0.39	−2.70 to 2.58	−5.20 to 0.40	7 to 10	0 to 8	0 to 8	10 to 26
	Depressed (N = 27)	M	8.19	−1.55	−1.64	−1.12	−1.79	9.59	5.70	3.93	19.22
		SD	2.04	1.01	0.66	0.94	1.09	1.39	2.40	2.67	5.49
		Min-Max	6 to 14	−2.85 to 0.40	−3.00 to 0.00	−2.60 to 1.09	−3.30 to 1.50	3 to 10	0 to 8	0 to 8	9 to 26

GDS-15, Geriatric Depression Scale 15-items; M, Mean; SD, Standard deviation; Min, Minimum; Max, maximum.