Table 3.

Correlation and linear regression analysis between SO₂-derived variables from different devices and high-altitude illness.

Dependent Variable	SO2 Derived From	Pearson’s r	p-Value	R2
Severity LLS	GAR	−0.167	0.251	0.007
	COV	−0.541	<0.001 *	0.278
	ABG	−0.809	<0.001 *	0.644
AMS positive	GAR	0.073	0.618	−0.016
	COV	−0.123	0.399	−0.006
	ABG	−0.304	0.068	0.066
HAPE positive	GAR	−0.034	0.814	−0.020
	COV	−0.115	0.431	−0.008
	ABG	−0.345	0.036 *	0.094

SO₂ = peripheral/arterial oxygen saturation; GAR = Garmin Fēnix^® 5X Plus; COV = Covidien Nellcor Portable SpO₂ Patient Monitoring; ABG = Radiometer ABL 90 Flex; LLS = Lake Louise Score; AMS = acute mountain sickness; HAPE = high-altitude pulmonary edema; * p < 0.05.