Table 2.

Influence of haemoglobin oxygen saturation (Hb-sO₂), haemoglobin mass (Hbmass) and blood volume on arterial oxygen content (CaO₂)

	p Value	Estimate	CI (95%)	AUS day 12, (%)	BOL day 16, (%)
Hb-sO2 (%)	<0.001	0.229	0.222 to 0.236	33	34
Hbmass (g)	<0.001	0.0271	0.0264 to 0.0278	20	8
Blood volume (mL)	<0.001	−0.00395	−0.00405 to −0.00384	42	55

Demonstrated are the results of an analysis of covariance (mixed model) and the calculated percentage contribution of Hb-sO₂, Hbmass and blood volume on the compensation of CaO₂ after ascent to altitude (difference from day 1).