a decreasing trendp < 0.05
Differences in Blood-Gas Indicators The measurements of the blood-gas indicators show that the Hb concentration and Hct first increased ( p < 0.05) and then decreased ( p < 0.05) with increasing altitude; while p50 had the opposite trend, pO 2 and sO 2 showed a decreasing trend ( p < 0.05) with increasing altitude ( Figure 2 ). 3.2.