MBL improved the area under the receiver operating characteristic curve of the diabetes duration for DRfrom 0.82(95% confidence interval [CI], 0.77–0.86) to 0.88(95% CI, 0.82–0.96; P<0.01) and for VDTR from 0.85(95% CI, 0.77–0.92) to 0.90(95% CI, 0.83–0.96; P<0.01). Here, MBL2 is linked to diabetes mellitus.