Age-adjusted mean values and multivariate-adjusted partial regression coefficients (95% CIs) of FPG and HbA1c according to smoking status.

Abbreviations: FPG, fasting plasma glucose; HbA1c, hemoglobin A1c; β, partial regression coefficients.The FPG and HbA1c values are expressed as the means (SE).Multivariate-adjustment was made for age, duration of diabetes mellitus, total energy intake, current drinking habits, regular exercise habits, depressive symptoms, oral hypoglycemic agents use, insulin use, and body mass index.Age-adjusted mean values and multivariate-adjusted partial regression coefficients (95% CIs) of FPG and HbA1c according to smoking status.