Standardized linear regression coefficients (βstd) between fasting insulin and A) total osteocalcin or B) carboxylated osteocalcin.

<p>Results are shown separately for the entire cohort (All) and the two groups (Term, VLBW) and they have been adjusted for age, gender and Z-score for lumbar spine BMD. Squares indicate the value for βstd, and the whiskers represent 95% confidence interval. The P values are indicated with asterisks: *, P<0.05; **, P<0.01; ***, P<0.001; ns, not significant.