Diagnostic associations to cobalamin levels.

Diagnoses related to Cbl levels in groups in patients referred for measurement of serum Cbl levels and not in Cbl supplementation therapy (n = 632). Patients were allowed to have more than one diagnosis. Odds ratios and 95% confidence intervals were obtained by logistic regression analyses.aPatients with Cbl levels ≤200 pmol/L were treated as reference group.bAdjusted for age (reference age 56 years) and gender (female as reference). Abbreviations: Cbl: cobalamin, vitamin B12; OR: OR: Odds ratio; 95% CI: 95% confidence interval.