Table 7.

Comparison of serum AP levels in OSAHS patients with different PSG parameters ($\overline{x}\pm s$).

PSG parameter	Subtype	Number of cases	AP (μg/L)	t value	P value
Proportion of REM	High level	88	5.16 ± 1.51	1.625	0.106
	Low level	87	5.55 ± 1.67
Microarousal count	High level	91	5.11 ± 1.59	2.132	0.034
	Low level	84	5.62 ± 1.58
MAI	High level	88	5.16 ± 1.63	5.162	0.110
	Low level	87	5.55 ± 1.56
AHI	High level	87	4.32 ± 1.09	11.129	<0.001
	Low level	88	6.38 ± 1.34
Times of blood oxygen decreased by ≥ 3%	High level	88	4.36 ± 1.15	10.668	<0.001
	Low level	87	6.37 ± 1.33
L-SaO2	High level	90	5.88 ± 1.58	4.716	<0.001
	Low level	85	4.80 ± 1.44
TS90%	High level	88	4.42 ± 1.22	9.662	<0.001
	Low level	87	6.30 ± 1.36