Undersøgelserne varede mellem fire måneder og to år og målte blodets indhold af et stof kaldet glykosyleret hæmoglobin (HbA1c), som viser, hvor godt blodets sukkerindhold reguleres.
The studies lasted between four months and two years and measured the level of a substance in the blood called glycosylated haemoglobin (HbA1c), which gives an indication of how well the blood glucose is controlled.