Table 1.

Demographic and clinical characteristics of the subjects

	Depressed patients		Nondepressed subjects
	Koreans	US Caucasians	Koreans	US Caucasians
Age, years	71.87±7.20∗,+	69.70±7.28+	75.01±8.07∗,+	69.96±5.63+
Gender (women), %	77.59∗' +	64.16+	49.86∗,+	71.20+
Education, years	6.50±5.18∗,+	13.61±3.03∗,+	8.08±5.64∗,+	15.58±1.65∗,+
CES-D, points	30.84±14.36∗	30.48±12.70	11.93±8.58∗,+	1.98±2.98+

With the exception of gender the values represent mean ± SD.

^∗p < 0.01 between nondepressed controls and depressed patients

⁺p < 0.01 between US Caucasians and Koreans.