Table 2.

Univariate and multivariate analysis for subclinical LV dysfunction

	Univariate analysis		Multivariate analysis
	OR	95% CI	OR	95% CI
Model A
Age	1.040	1.003 − 1.078	1.025	0.981 − 1.071
OSA severity
Mild	Reference category
Moderate	2.62	0.97 − 7.04	1.23	0.36 − 4.16
Severe	2.96	1.26 − 6.92	0.94	0.29 − 3.07
Length of time spent in SpO2 <90%	1.009	1.001 − 1.016	1.006	0.997 − 1.016
LVEF	0.933	0.870 − 1.000	0.963	878 − 1.057
Left atrial diameter	0.996	0.983 − 1.009	0.993	0.976 − 1.010
fQRS	6.69	3.10 − 14.43	4.77	1.95 − 11.65
Model B
Age	1.040	1.003 − 1.078	1.027	0.982 − 1.073
AHI	1.022	1.005 − 1.039	1.009	0.986 − 1.032
Length of time spent in SpO2 <90%	1.009	1.001 − 1.016	1.004	0.995 − 1.014
LVEF	0.933	0.870 − 1.000	0.976	0.891 − 1.068
Left atrial diameter	0.996	0.983 − 1.009	0.992	0.975 − 1.010
fQRS	6.69	3.10 − 14.43	4.59	1.94 − 10.87