Table 3.

Odds ratio product during nocturnal polysomnography in current patients vs patients with mixed sleep disorders

Sleep stage	Mixed disordersa	Current study	SOL <8 minutes	SOL >8 minutes
	n=102	n=30	n=13	n=17
Awake	2.04±0.16	2.11±0.13*	2.11±0.11*	2.10±0.15
non-REM 1	1.04±0.22	1.27±0.33***	1.28±0.40**	1.27±0.30**
non-REM 2	0.68±0.23	0.91±0.42***	0.94±0.43**	0.89±0.43**
non-REM 3	0.36±0.18	0.44±0.33*	0.42±0.29	0.46±0.36*
REM	1.00±0.32	1.05±0.39	1.06±0.50	1.03±0.29

Notes: Results from 102 patients including 49 patients with obstructive sleep apnea (apnea–hypopnea index 26.4±27.1), 14 patients with insomnia, 12 patients with periodic limb movements, and 27 with no pathology. Asterisks, significantly higher than mixed disorders (df >100),

^*P<0.05 (t=1.74–1.98),

^**P<0.001 (t=3.09–3.65), and

^***P<0.0001 (t=4.02–4.38).

^aRepublished with permission of American Academy of Sleep Medicine, from Accuracy of automatic polysomnography scoring using frontal electrodes. Younes M, Younes MK, Giannouli E. Vol. 12, number 5, 2016. In press; permission conveyed through Copyright Clearance Center, Inc.

Abbreviations: SOL, average sleep onset latency; REM, rapid eye movement.