Table 1.

Baseline characteristics of subjects (mean +/− S.D.)

	L_A/L_A	S/L_A or L_G/L_A	S/S or S/L_G
	N=18	N=39	N=14
Age	47.6 +/− 12.2	49.0 +/− 11.0	47.7 +/− 13.5	n.s.
Percent female	33.3%	20.5%	35.7%	n.s.
Percent African-American	11.1%	12.8%	14.3%	n.s.
History of mood disorder	33%	23%	43%	n.s.
History of drug/alcohol disorder	50%	56%	57%	n.s.
Beck Depression Inventory	6.3 +/− 6.2	6.0 +/− 5.1	8.6 +/− 7.5	n.s.
Pittsburgh Sleep Quality Index	4.4 +/− 2.0	7.1 +/− 3.9	8.1 +/− 6.1	p<0.1
Neuroticism	15.3 +/− 8.3	14.9 +/− 6.8	18.5 +/− 8.0	n.s.
Cumulative Illness Rating Scale	2.8 +/− 1.2	3.7 +/− 2.1	3.1 +/− 1.6	n.s.

(n.s. indicates p>0.1 in either ANOVA or chi-square tests)