. Author manuscript; available in PMC: 2009 Oct 27.

Published in final edited form as: J Gerontol A Biol Sci Med Sci. 2008 Dec;63(12):1410–1415. doi: 10.1093/gerona/63.12.1410

Table 1.

Descriptive Characteristics of DEXA Participants and the 2004–2005 ECA Cohort

Characteristic	Entire 2004–2005 ECA Sample Age 60+	DEXA Participants	p Value^*
N	398	98
Age in years, mean (SD)	72.8 (10.0)	71.5 (6.6)	.22
Women, n (%)	257 (64.6)	66 (67.4)	.60
White, n (%)	265 (66.6)	65 (66.3)	.96
Education in years, mean (SD)	11.2 (3.0)	11.4 (2.7)	.55
Current smoker, n (%)	70 (17.6)	17 (17.4)	.96
Number of days drank per month, mean (SD)	3.2 (7.3)	2.8 (6.7)	.62
Lifetime MDD, n (%)	33 (8.9)	10 (10.3)	.67
Lifetime antidepressant use, n (%)	82 (20.6)	28 (28.6)	.09
Self-rated good/excellent health, n (%)	198 (59.5)	67 (69.8)	.06

Notes:

p value for t tests for continuous variables and likelihood chi-square tests for categorical variables.

DEXA = dual-energy x-ray absorptiometry; ECA = (Baltimore) Epidemiologic Catchment Area; SD = standard deviation; MDD = major depressive disorder.