approaching significancep -value = 0.09
In a dominant model, individuals who were either heterozygotes or homozygotes for the I-allele (grouped together) displayed higher SaO 2 (β regression coefficient = 1.71, p -value < 0.01) at 1,400 m; the relationship was approaching significance (β regression coefficient = 2.79, p -value = 0.09) for 4,240 m.