Table 2.

Polysomnography indices of two patients before titration study

	N1%	N2%	N3%	REM%	Sleep period (min)	Sleep efficiency%	AI	AHI	Mean duration (sec)	Longest duration (sec)	ODI	Ds< 90%	Mean SpO2 (%)	Lowest Sp O2 (%)	PLMI
	18	78	0	4	72	49	88	111	15.8	200.4	36	59.3	94	< 50	9
	32	58	0	10	226	90.6	42	62.7	22.1	275.6	89	99.2	79.6	50	4.4

AI: Arousal index, AHI: Apnea-hypopnea index, , REM: Rapid eye movement, ODI: Oxygen desaturation events index, Ds: Desaturation, PLMI: Periodic leg movement index