Table 3.

Multivariate analysis of relationships among low quartiles of FMD and FBG levels

FBG (mg/dL)	OR (95% CI), P value
	Unadjusted	Model 1	Model 2
FBG <90	1 (reference)	1 (reference)	1 (reference)
FBG 90–94	1.19 (0.99 to 1.43), 0.06	1.15 (0.96 to 1.39), 0.13	1.07 (0.89 to 1.29), 0.46
FBG 95–99	1.52 (1.27 to 1.82), <0.001	1.43 (1.19 to 1.72), <0.001	1.28 (1.07 to 1.55), 0.01
FBG 100–109	1.82 (1.54 to 2.16), <0.001	1.66 (1.39 to 1.97), <0.001	1.41 (1.18 to 1.68), <0.001
FBG 110–125	2.25 (1.81 to 2.81), <0.001	2.04 (1.63 to 2.56), <0.001	1.59 (1.26 to 2.01), <0.001
FBG ≥126 or DM	2.82 (2.32 to 3.41), <0.001	2.19 (1.79 to 2.67), <0.001	1.54 (1.25 to 1.91), <0.001

Model 1; adjusted for age ≥65 years old, gender.

Model 2; adjusted for age ≥65 years old, gender, hypertension, dyslipidemia, obesity, and current smoking.

Low quartile of FMD indicates less than 4.2%.

DM, diabetes mellitus; FBG, fasting blood glucose; FMD, flow-mediated vasodilation.