Serum levels of insulin, glucose, and osteocalcin before (fasting) and after (120 min) OGTT in the Term and VLBW groups.

Values are geometric means (SD) and the p values are for the difference between Term and VLBW groups with one-way ANOVA (after logarithmic transformation) or Mann-Whitney nonparametric test (%-changes). Results are shown for the entire cohort (n = 331) and for males (n = 138) and females (n = 193) separately. Significant p values are shown in bold. HOMA-IR was calculated as Fasting Insulin * Fasting Glucose divided by 22.5.