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Table 3 Intraclass correlation coefficients with 95% confidence intervals (a single measurement, consistency, 2-way mixed-effects model) for IO1 versus arterial sample results

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

  ICC (95% CI)
Na (mmol/l) 0.174 (−0.200; 0.503)
K (mmol/l) 0.050 (−0.317; 0.404)
iCa (mmol/l) −0.004a (−0.364; 0.358)
pH 0.513 (0.187; 0.738)
BE (mmol/l) 0.837 (0.682; 0.738)
HCO3 (mmol/l) 0.765 (0.559; 0.883)
pO2 (kPa) 0.282 (−0.095; 0.588)
pCO2 (kPa) 0.460 (0.119; 0.704)
Hb (g/l) 0.104 (−0.274; 0.454)
Hct (%) 0.100 (−0.277; 0.451)
Gluc (mmol/l) 0.779 (0.571; 0.893)
Lact (mmol/l) 0.738 (0.497; 0.873)
  1. a ICC is negative due to low between-subjects variance