Table 2.

Validity criteria of GAR-derived SO₂ values compared to those obtained with a medical device (COV) and with arterial blood gas analysis (ABG) at 4559 m.

	ICC	MAPE [%]	Pearson’s r	p-Value
GAR vs. COV (n = 49)	0.661	6.81	0.537	0.011 *
GAR vs. ABG (n = 37)	0.549	9.77	0.380	<0.001 *
COV vs. ABG (n = 26)	0.883	6.15	0.904	0.979

ICC = intraclass correlation coefficient; MAPE = mean absolute percentage error; GAR = Garmin Fēnix^® 5X Plus; COV = Covidien Nellcor Portable SpO₂ Patient Monitoring; ABG = Radiometer ABL 90 Flex; * p < 0.05; p-values were derived via unpaired t-test.