. Author manuscript; available in PMC: 2010 Jun 1.

Published in final edited form as: Am J Geriatr Psychiatry. 2009 Jun;17(6):493–502. doi: 10.1097/jgp.0b013e3181953b82

Table 1.

Demographic and Clinical Characteristics of the Sample.

Variables	MCI group Mean (SD), Range	Comparison subjects Mean (SD), Range	Statistics^* t(41)/χ²(1);p-value
Gender (F:M)	14:9	8:12	1.9,0.2
AD family history (Y:N)	8:15	10:10	1.0; 0.3
Age (yrs)	68.2 (12.2), 49-87	63.7 (12.5), 40-87	1.2;0.2
Education (yrs)	16.6 (3.4), 12-24	17.7 (2.7), 13-22	-1.1;0.3
MMSE	27.6 (1.4), 25-30	29.4 (0.9), 27-30	-4.8;0.0001
GDS	5.7 (4.4), 1-15	5.3 (3.7), 0-15	0.4;0.7
State Anxiety	36.5 (10.0), 20-57	31.7 (8.8), 20-52	1.7;0.1
Trait Anxiety	35.2 (9.1), 20-49	30.9 (10.9), 15-58	1.4;0.2

For all continuous variables student's t-tests were conducted; for gender and AD family history, the ratio between the groups was compared using Chi-square test. MMSE- Mini-Mental State Examination; GDS- Geriatric Depression Scale, State Anxiety and Trait Anxiety- are Sub-scale scores of the State-Trait Anxiety Inventory.