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. 2023 Nov 18;19:241. doi: 10.1186/s12917-023-03804-z

Table 2.

Results of the mixed-effects model describing the effects of PaO2 and confounding factors on oxygen reserve index

Estimate Standard Error t value P Value
Intercept -0.58299 0.19981 -2.918 0.005
PaO2 0.00574 0.00058 9.976 < 0.001
PI 0.02545 0.03382 0.753 0.455
PaCO2 0.00328 0.00312 1.052 0.296
Hct 0.00218 0.00315 0.692 0.493

PaO2 Arterial partial pressure of oxygen, PI Perfusion index, PaCO2 Arterial partial pressure of carbon dioxide, Hct Haematocrit