. Author manuscript; available in PMC: 2010 Nov 2.

Published in final edited form as: Am J Geriatr Psychiatry. 2009 Jan;17(1):4–12. doi: 10.1097/JGP.0b013e31816ff72b

TABLE 1.

Subjects: Descriptive Information

	Comparison Subjects (N = 15)	LLD Subjects (N = 23)	Test Statistic (df), p value
Age, years, mean (SD)	69.9 (6.4)	70.5 (5.7)	t = −0.27 (36), 0.78
% Male	60 (n = 9)	39 (n = 9)	χ² = 0.096 (36), 0.92
Education, years, mean (SD)	15.0 (2.3)	14.9 (3.0)	t = 2.36 (1), 0.12
% White	80 (n = 12)	95.7 (22)	χ² = 2.36 (1), 0.12
Mini-Mental Status Examination, mean (SD)	29.0 (1.4)	28.8 (1.6)	t = 0.434 (36), 0.67
Dementia Rating Scale, mean (SD)	140.2 (2.7)	19.0 (4.5)	t = 1.78 (36), 0.08
HDRS (17-item), mean (SD)	1.8 (1.8)	19.0 (4.5)	t = −13.9(36), <0.001
Age of first depression episode, years, mean (SD)	—	46.4 (19.9)	—
% Late onset (age ≥60)	—	39.1 (n = 7)	—
% Single episode	—	39.1 (n = 9)	—