[31] contributed with a systematic analysis of a local database containing blood glucose concentrations and outcomes using a metric methodology. In principle, three different measures that influenced outcomes in terms of mortality were identified out of the blood glucose concentrations; hyperglycaemia, hypoglycaemia, and glucose variability. Needless to say, the study did not include the possibility of differentiating the relative predictive values of the three measures, but as pointed out by Krinsley [32] in an accompanying editorial, future studies of blood glucose control cannot avoid including all three measures.