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Table 2 Bias (95% confidence interval) between the IO1 (initial) and IO2 (after 2 ml of waste blood) results, calculated using the Bland-Altman method

From: Intraosseous blood samples for point-of-care analysis: agreement between intraosseous and arterial analyses

Na (mmol/l) −0.14 (−1.17; 0.88)
K (mmol/l) −0.77 (−1.17; −0.38)
iCa (mmol/l) 0.02 (−0.01; 0.05)
pH −0.02 (−0.03; −0.01)
BE (mmol/l) −0.32 (−0.69; 0.04)
HCO3 (mmol/l) 0.2 (−0.15; 0.55)
pO2 (kPa) −0.26 (−1.06; 0.54)
pCO2 (kPa) 0.25 (0.11; 0.39)
Hb (g/l) 11.52 (−3.69; 26.72)
Hct (%) 3.41 (−1.07; 7.89)
Gluc (mmol/l) 0.07 (0; 0.13)
Lact (mmol/l) −0.05 (−0.12; 0.01)