. 2023 Jan 27;13(1):129–139. doi: 10.1007/s44197-023-00089-1

Table 3.

Univariate analysis of significant variables using logistic regression

Variable	Units	Def 1			Def 2			Def 3
Variable	Units	OR	CI 95%	p value	OR	CI 95%	p value	OR	CI 95%	p value
Age in years	≤ 50	Ref			Ref			Ref
	> 50	0.87	[0.63;1.21]	0. 4134	1.23	[0.88;1.71]	0.2209	0.75	[0.53;1.05]	0.0922
Gender	Female	Ref			Ref			Ref
	Male	1.38	[1.01;1.89]	0.04505	1.57	[1.13;2.17]	0.0068	1	[0.72;1.40]	0.9859
BMI in kg/m²	> 35	Ref			Ref			Ref
	≤ 35	1.76	[1.27;2.44]	< 0.001	0.63	[0.45;0.88]	0.0061	1.52	[1.08;2.15]	0.0165
DM	No	Ref			Ref			Ref
	Yes	1.33	[0.93;1.91]	0.1202	0.73	[0.50;1.06]	0.0949	1.8	[1.24;2.60]	0.0019
COPD	No	Ref			Ref			Ref
	Yes	0.88	[0.62;1.25]	0.4837	1.12	[0.78;1.61]	0.5426	1	[0.69;1.44]	0.9971
Asthma	No	Ref			Ref			Ref
	Yes	0.99	[0.70;1.40]	0.9362	0.95	[0.66;1.36]	0.785	0.99	[0.69;1.43]	0.974
HTN	Yes	Ref			Ref			Ref
	No	0.72	[0.50;1.02]	0.06495	1.03	[0.72;1.48]	0.8733	0.60	[0.42;0.87]	0.0069
IHD	Yes	Ref			Ref			Ref
	No	1.19	[0.84;1.68]	0.3321	0.88	[0.61;1.25]	0.4687	1.1	[0.70;1.44]	0.999
AHI	< 10	Ref			Ref			Ref
	> 10	0.63	[0.44;0.90]	0.0123	92.56	[22.67;377.89]	< 0.001	3.41	[2.36;4.93]	< 0.001
AHI in REM	≤ 20	Ref			Ref			Ref
	> 20	0.64	[0.44;0.92]	0.01717	5.13	[3.19;8.26]	< 0.001	3.01	[2.12;4.27]	< 0.001
Mean SaO₂ in %	≤ 95	Ref			Ref			Ref
	> 95	1.42	[0.93;2.18]	0.1061	0.55	[0.35;0.86]	0.0083	1.08	[0.69;1.68]	0.7482
Time SaO₂ Less 90%	≤ 2	Ref			Ref			Ref
	> 2	0.65	[0.46;0.92]	0.01386	1.97	[1.39;2.79]	< 0.001	0.65	[0.45;0.94]	0.0223

BMI body mass index, DM diabetes mellites, COPD chronic obstructive pulmonary disease, HTN hypertension, IHD ischaemic heart disease, AHI apnoea–hypopnea index, SaO₂ oxygen saturation, REM rapid eye movement