Table 2.

Effects of group and age on sleep continuity, sleep architecture, spindle density, and SDMC

	Control	Schizophrenia	Group		Age		Group × Age
	M ± SD	M ± SD	F	p	F	p	F	p
Sleep continuity
TST (min)	451 ± 74	464 ± 106	1.13	.29	8.46	.004 *	.001	.97
WASO (min)	45 ± 29	48 ± 56	.03	.87	8.07	.005 *	3.07	.08
SFI (# transitions/h of TST)	5.3 ± 1.9	4.8 ± 3.7	1.86	.18	3.41	.07	3.63	.06
bArousal density (#/h of TST)	8.0 ± 2.6	6.7 ± 2.9	3.80	.06	1.21	.28	2.26	.14
bArousal length (sec)	9.9 ± 1.7	10.2 ± 1.7	.30	.58	.02	.90	.09	.77
Sleep architecture (min)
N1	40 ± 21	36 ± 21	1.12	.29	.32	.58	.01	.92
N2	249 ± 53	261 ± 81	1.43	.23	3.38	.07	0	.99
N3	71 ± 35	80 ± 54	1.22	.27	1.24	.27	.43	.51
REM	91 ± 30	88 ± 39	.23	.63	6.07	.02	.39	.53
Sleep architecture (%)
N1	9 ± 4	8 ± 5	.37	.55	4.01	.05	.07	.78
N2	55 ± 9	56 ± 12	.53	.47	0	.99	.08	.78
N3	16 ± 7	17 ± 10	.72	.40	.02	.88	.39	.53
REM	20 ± 7	18 ± 7	2.51	.12	1.48	.22	.67	.41
Sleep spindles
Spindle density (#/min)	4.4 ± 2.1	2.7 ± 1.6	78.08	<.001 *	11.13	.001 *	.11	.74
Memory consolidation
MST improvement (%)	8.1 ± 13.1	−.9 ± 18.3	10.90	.001 *	6.68	.01 *	.59	.44

^aArousals were visually scored only in dataset 3.

*Only models with p ≤ .05 after multiple comparison correction are denoted as significant.