Table 2.

Subgroup analyses of the association between HGI and risk of composite CVD.

	Number of studies	Per 1 SD increment of HGI
		HR (95% CI)#	P value*/I2
Participants age			0.61/0%
≤ 60	2	1.07 [0.81, 1.42]
>60	2	0.99 [0.93, 1.06]
Follow-up duration			0.61/0%
≤ 5 years	2	0.99 [0.93, 1.06]
>5 years	2	1.07 [0.81, 1.42]
Baseline CVD			0.01/84.5%
Yes	2	0.96 [0.88, 1.06]
No	2	1.22 [1.04, 1.43]

^#Adjusted for multiple cardiovascular disease and level of HbA1c.

^*For heterogeneity among subgroups.

CVD, cardiovascular disease; HGI, hemoglobin glycation index; SD, standard-deviation.