Table 3.

Multivariate logistic regression analysis of the risk factors for acute mountain sickness

	β	SE	Wald	P-value	OR (95% CI)
AISSs13	0.336	0.020	227.481	<0.001	1.388 (1.314–1.464)
SaO2	−0.057	0.018	7.476	<0.01	0.931 (0.894–0.971)
Duration of altitude exposure	−1.232	0.131	98.105	<0.001	0.296 (0.227–0.378)

Note: Dependent variable: acute mountain sickness.

Abbreviations: AISS, Athens Insomnia Scale score; CI, confidence interval; OR, odds ratio; SaO₂, arterial oxygen saturation; SE, standard error.