TABLE 3.

Results from general linear regression analysis on beta relative power and SE and MSL during total overnight and daytime.

Dependent variables	Independent variables	NCs			CIs			All
		F	β	P	F	β	P	F	β	P
Total daytime beta	Total overnight beta	0.894	0.212	0.356	8.851	0.484	0.006*	14.653	0.476	<0.001*
	SE	1.601	0.279	0.221	2.772	–0.295	0.107	3.662	–0.261	0.061#
	MSL	0.277	0.120	0.605	2.076	0.258	0.160	4.044	0.274	0.050*
Total overnight beta	SE	0.111	–0.076	0.743	1.372	–0.213	0.251	4.552	–0.289	0.038*
	MSL	0.010	–0.022	0.923	0.205	–0.084	0.654	0.209	0.065	0.649

β, standard regression coefficient; NCs, Normal Controls; P, value for significance of each regression coefficient; CIs, Chronic Insomniacs; MSLT, multiple sleep latency tests; SE, sleep efficiency; MSL, mean sleep latency; beta, 16.0–30.0 Hz. Values in bold indicate statistically significant; *P ≤ 0.05; ^#, 0.05 < P ≤ 0.1.