Fig. 1From: Agreement of pCO2 in venous to arterial blood gas conversion models in undifferentiated emergency patientsBland–Altman plots for conversion models of Farkas, Lemoël and Zeserson including all 243 blood gas pairs. Y-axis showing the difference between estimated and arterial pCO2 in mmHg, mean (black line) and 95% limits of agreement (dashed line). X-axis showing average of estimated and arterial pCO2 in mmHg. Patients without supplemental oxygen in red, with ongoing supplemental oxygen in blueBack to article page