Age-adjusted mean values and multivariate-adjusted partial regression coefficients (95% CIs) of FPG and HbA_1c 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.