Table 3.

Effects of group and time point by frequency for absolute power in F3 and F4 channels.

F3,F4 Absolute	0.5–1 (slow)	1–4 (delta)	4–8 (theta)	8–12 (alpha)	12–16 (sigma)	16–32 (beta)	0.5–32 (total)
Group	5.4, P = 0.021	0.01, P = 0.94	5.1, P = 0.026	6.3, P = 0.013	12.0, P = 0.001*	4.6, P = 0.034	0.003, P = 0.953
Group × NREM	1.1, P = 0.376	0.5, P = 0.757	2.7, P = 0.031	1.7, P = 0.142	0.3, P = 0.854	2.4, P = 0.048	0.4, P = 0.797
Time Point	0.8, P = 0.364	0.1, P = 0.733	1.0, P = 0.314	0.6, P = 0.436	8.6, P = 0.003*	8.7, P = 0.003*	0.8, P = 0.778
Time Point × NREM	0.7, P = 0.619	0.5, P = 0.775	0.2, P = 0.958	0.6, P = 0.643	0.03, P = 0.998	0.5, P = 0.747	0.4, P = 0.800

F and P values for all main effects of group and interactions with NREM period, and F and P values for all main effects of time point and interactions with NREM period. Effects of group include control and insomnia groups at T1. Effects of time point include only the insomnia group at T1 and T2. Bold font denotes uncorrected significance. *Denotes significance after Holm-Sidak correction. NREM = non-rapid eye movement.