Table 1.

Group demographics and Levels of antibodies to infectious agents.

Group	Demographics			Herpes Simplex, type 1 (HSV-1)		Herpes Simplex, type 2 (HSV-2)		Cytomegalovirus (CMV)		Toxoplasma Gondii (Tox)
	Sex (Male/female)	Age in years (mean ± S.D*)	Race (Caucasian/African - American/Asian)	Serostatus**	Ab titers (mean, S.D.)	Serostatus	Ab titers (mean, S.D.)	Serostatus	Ab titers (mean, S.D.)	Serostatus	Ab titers
Normal sleepers (n=131)	55/76 (58%/42%)	68.6 ± 7.01	117/13/1 (89%/9.9%/0.8%)	83/48 (63.4/36.6%)	2.0 ± 1.3	40/91 (30.5%/69.5%)	1.0 ± 1.1	90/41 (68.7/31.3%)	3.4 ± 2.2	58/73 (44.3/55.7%)	1.4 ± 1.2
Insomnia (n=180)	63/117 (65%/35%)	69.4 ± 7.12	159/18/3 (88.3%/10.0%/1.7%)	110/70 (61.1/38.9%)	2.0 ± 1.5	42/138 (23.3/76.7)	0.9 ± 1.0	123/57 (68.3/31.7%)	3.3 ± 2.2	81/99 (45/55%)	1.6 ± 1.4
Generalized linear model for IgG titers, binary logistic model for binary status				B=0.14, p=0.56	B=0.016, p=0.92	B=0.476, p=0.9	B=0.188, p=0.09	B=0.079, p=0.76	B=0.085, p=0.74	B=0.019, p=0.94	B=−0.153, p=0.32

^*S.D.: standard deviation

^**Serostatus: number of persons with elevated antibody titers, above a pre-determined threshold. Ab titers: Titers of antibodies to the respective infectious agent IgG