Table 1.

Unadjusted descriptive statistics for good sleeper controls and for insomnia participants.

	Controls (n = 38)	Insomnia (n = 28)
% Female (n)	63% (24)	57% (16)
Age in years	39.4 (8.2)	38.2 (1.8)
Inventory of Depressive Symptoms**	1.53 (2.66)	10.96 (7.7)
Interpersonal Problems*	10.42 (10.7)	16.42 (10.7)
Subjective Ratings
Pittsburgh Sleep Quality Index**	1.9 (1.4)	12.5 (2.8)
Cognitive Presleep Arousal**	12.5 (1.3)	17.3 (4.1)
Somatic Presleep Arousal*	8.5 (1.4)	10.2 (2.1)
Hyperarousal Scale**	22.47 (8.1)	34.7 (8.4)
Insomnia Severity Index**	.79 (1.1)	15.8 (4.1)
PSG Sleep Measures	Controls (n = 30)	Insomnia (n = 25)
Sleep Latency (minutes)†**	15.7 (9.5)	21.6 (24.3)
Wakefulness after Sleep Onset (minutes)†	36.8 (29.8)	39.7 (25.1)
Total Sleep Time (minutes)	406.9 (41.8)	394.8 (49.5)
Percent REM	25.0 (4.9)	24.5 (3.8)
Percent Delta†	8.1 (6.9)	8.6 (6.2)
Beta Power (μ V2/Hz)†	.06 (.02)	.07 (.03)

Note.

^†Transformation used in analyses. Values in descriptive table are un-transformed to facilitate interpretation.

^*p < .05;

^**p < .001