Fig. 2
From: The incretin effect in critically ill patients: a case–control study
Glucose, insulin and C-peptide. Mean blood glucose (a) was measured every 5 minutes for the first 60 minutes and every 10 minutes for the next 120 minutes after glucose ingestion. Geometric mean insulin (c) and geometric mean serum C-peptide (e) [with 95 % confidence interval (CI)] were measured every 20 minutes for 180 minutes after glucose ingestion. Mean iAUC of blood glucose (b), geometric mean iAUC of serum insulin (d) and geometric iAUC mean of serum C-peptide (f) (95 % CI). *Significant difference between OGTT and IVGI; #significant difference between groups. iAUC incremental area under the curve, IVGI intravenous glucose infusion, OGTT oral glucose tolerance test