Table 1

 Mean difference and percentage discrepancy according to American Diabetic Association (ADA) and National Committee for Clinical Laboratory Standards (NCCLS) standards

Glucometer − laboratory reading (mmol/l)Percentage with total error <10% (ADA)Percentage with discrepancy ⩽0.83 mmol/l (NCCLS)
MeanSD95% CI
Phase I
    Glucotrend0.1680.876−0.79 to 0.2151.094.5
    Advantage1.0672.2800.21 to 0.5920.081.5
    Reflolux S−0.3440.919−0.64 to −0.2126.368.4
Phase II
    Elite XL0.2411.004−0.73 to 0.5538.185.7
    Precision−0.1160.488−0.27 to 0.3446.586.0
    Reflolux S−0.2680.496−0.42 to 0.1229.588.6