Table 2.

Linear and logistic regression models for low ScvO₂

Linear regression for ScvO2	Coefficient	95 % Confidence interval	p Value
Longitudinal strain	−1.05	−1.78, −0.32	0.006
Central venous pressure	−0.95	−1.85, −0.04	0.041
Logistic regression ScvO2 <60 %	Odds ratio	95 % Confidence interval	p Value
Longitudinal strain	1.23	1.04, 1.45	0.016
Central venous pressure	1.26	1.02, 1.55	0.030
Logistic regression ScvO2 <70 %	Odds ratio	95 % Confidence interval	p Value
Longitudinal strain	1.11	0.99, 1.26	0.079

ScvO ₂ central venous oxygen saturation

Initial model included covariates of age, Sequential Organ Failure Assessment score, central venous pressure, mean arterial pressure, and norepinephrine-equivalent vasopressor dose. Linear regression R ² =0.27. Areas under the curve for the logistic regression models were 0.84 for ScvO₂ <60 % and 0.75 for ScvO₂ <70 %