Table 4.

Correlation analysis between serum AP level and clinical indexes.

Item	AP
	r value	R 2 value	P value
Age	0.116	0.014	0.085
BMI	0.162	0.026	0.016
TST	0.071	0.005	0.293
SE	0.041	0.002	0.549
Proportion of REM	−0.173	0.030	0.010
AHR	−0.025	0.001	0.717
Microarousal count	−0.350	0.123	<0.0001
MAI	−0.351	0.124	<0.0001
AHI	−0.743	0.551	<0.0001
Times of blood oxygen decreased by ≥ 3%	−0.733	0.537	<0.0001
L-SaO2	0.523	0.273	<0.0001
M-SaO2	0.122	0.015	0.070
TS90%	−0.592	0.350	<0.0001
TC	−0.075	0.006	0.266
TG	−0.102	0.010	0.131
HDL-C	0.030	0.001	0.654
LDL-C	0.023	0.001	0.735
LP	−0.618	0.382	<0.0001
Ox	−0.076	0.006	0.263