Peripheral arterial tonometry versus polysomnography in suspected obstructive sleep apnoea

Table 5 Associations between clinical variables and AHI as measured by PSG and PAT

	PAT AHI		PSG AHI
	Beta	p-value^a	Beta	p-value^a
Age (years)	0.164	< 0.0001	0.086	0.008
Body mass Index (kg/m²)	0.307	< 0.0001	0.275	< 0.0001
Pack years	0.149	0.001	0.108	0.020
Total sleep time (min)	− 0.126	< 0.0001	− 0.077	0.018
Time snoring (min)	0.251	< 0.0001	0.135	0.001
Comorbidities
Arterial hypertension	0.101	0.002	0.061	0.062
Atrial fibrillation	0.074	0.023	0.070	0.032
Asthma	− 0.082	0.012	− 0.036	0.266
Chronic obstructive pulmonary disease	0.088	0.007	0.062	0.057
Congestive heart failure	0.100	0.002	0.021	0.512
Coronary artery disease	0.038	0.250	0.023	0.487
Depression	0.001	0.975	− 0.008	0.805
Diabetes mellitus	0.084	0.010	0.101	0.002

Values in bold indicate significant p-values
AHI apnoea hypopnoea index, PAT peripheral arterial tonometry, PSG polysomnography
^aLinear regression

ISSN: 2047-783X