Table 3.

Correlations of symptoms with sleep architecture and AHI

		N1	N2	N3	REM	Sleep onset	Sleep time	Sleep efficiency	Arousal index	AHI
Snoring	Correlation coefficient	0.267	0.062	−0.417	−0.089	0.264	0.065	0.091	0.185	0.223
	p	0.178	0.760	0.031	0.660	0.184	0.748	0.650	0.356	0.264
Falling asleep during the day	Correlation coefficient	0.234	0.105	−0.571	0.175	−0.302	0.246	0.236	0.146	0.104
	p	0.249	0.609	0.002	0.393	0.134	0.225	0.246	0.477	0.613
Waking up tired	Correlation coefficient	0.075	0.061	−0.346	0.090	−0.226	0.357	0.423	0.224	0.062
	p	0.716	0.765	0.083	0.662	0.267	0.074	0.031	0.271	0.763
Excessive fatigue or sleepiness	Correlation coefficient	0.355	−0.054	−0.449	−0.161	0.214	−0.045	−0.059	0.170	0.148
	p	0.082	0.798	0.024	0.443	0.305	0.830	0.780	0.416	0.479
Stopped breathing during sleep	Correlation coefficient	0.163	0.070	−0.200	0.083	0.019	0.077	0.161	0.058	0.178
	p	0.436	0.740	0.337	0.693	0.929	0.714	0.442	0.784	0.396
Insomnia	Correlation coefficient	0.281	−0.078	−0.426	−0.264	−0.213	−0.336	−0.264	0.445	0.151
	p	0.164	0.707	0.030	0.192	0.297	0.093	0.193	0.023	0.463
Trouble paying attention	Correlation coefficient	0.245	0.026	−0.479	−0.215	−0.296	0.042	0.104	0.318	0.249
	p	0.227	0.899	0.013	0.291	0.141	0.837	0.612	0.113	0.220
Leg jerks during sleep	Correlation coefficient	−0.161	0.351	0.069	0.294	−0.008	0.250	0.278	−0.145	−0.178
	p	0.475	0.109	0.760	0.183	0.972	0.262	0.211	0.520	0.427
AHI	Correlation coefficient	0.605	−0.364	−0.484	−0.552	−0.012	−0.388	−0.394	0.775	–
	p	0.000	0.048	0.007	0.002	0.949	0.034	0.031	0.000

AHI=apnea-hypopnea index.

Only statistically significant values are highlighted.