AHSG and type 2 diabetes mellitus: Each one quartile increase of serum fetuin-A concentrations was significantly associated with increased risk of type 2 diabetes when referenced not only to NGT but also IGR (Model 2, OR 1.24, 95% CI 1.07–143, p = 0.004; OR 1.25 95% CI 1.08–1.44, p = 0.003, respectively), after adjustment for age, sex, community, current smoking, current drinking (Table 2).