Table 7.

Dissipation of NREM Slow-Wave Activity

	Change in 1–4.5 Hz NREM SWA activity from first to last 20 minutes of sleep
Covariates	Estimate (β)	P-value
Sleep timing	0.0574	.002
Age	0.002	.654
Sex	0.010	.823
Race	0.105	.192
CDR	−0.004	.949
ApoE4 status	0.032	.538
Aβ42/40	−0.097	.930
AHI	0.004	.116
PLMI	0.0006	.497
Daytime minutes napping	0.001	.170

NREM, non-rapid-eye movement; SWA, slow-wave activity; TST, total sleep time; SOL, sleep onset latency; min, minutes; CDR, clinical dementia rating; ApoE4 status, apolipoprotein E ε4 positive; AHI, apnea–hypopnea index; PLMI, periodic limb movement index; Aβ, amyloid-beta.

Bold P-values are significant at <0.05.