Low Serum Tryptophan Levels as an Indicator of Global Cognitive Performance in Nondemented Women over 50 Years of Age

Table 1

Clinical and demographic features of all individuals ().

Age (years)	Mean ± SD	71.92 ± 11.84
	Min, Max	51.00–97.00
Education	Mean ± SD	8.48 ± 5.02
	0–4 years	11 (14%)
	5–9 years	46 (60%)
	10–24 years	20 (26%)
Civil status	Married	30 (39%)
	Single	19 (25%)
	Widow	28 (36%)
Occupation	Paid employment	47 (61%)
	Vacant/retired	30 (39%)
Comorbidities	0–3	59 (77%)
	4–6	16 (20%)
	7–9	2 (3%)
Cognition profile	Mean ± SD	85.86 ± 20.24
	Min, Max	23.00 ± 119.00
	Normal	54 (70%)
	Mild impairment	10 (13%)
	Moderate impairment	11 (14%)
	Severe impairment	2 (3%)
GDS (depression),	Mean ± SD	3.44 ± 2.60
	Min, Max	0.0 ± 10.00
	Without depression symptoms	42 (67%)
	With depression symptoms	21 (33%)
BAI (anxiety)	Mean ± SD	12.52 ± 10.98
	Min, Max	0.0–42.00
	Minimal	36 (47%)
	Mild	21 (27%)
	Moderate	14 (18%)
	Severe	6 (8%)

GDS: geriatric depression scale; BAI: Beck anxiety inventory.