Table 3.

AUROC curve of HbA_1c by subgroup

Subgroups	AUROC (95% CI)
	Exploration dataset	Internal validation dataset	External validation dataset
Sex-based groups
Male	0.821 (0.782–0.859)	0.784 (0.721–0.848)	0.827 (0.792–0.862)
Female	0.859 (0.831–0.887)	0.881 (0.842–0.921)	0.832 (0.800–0.864)
Hypertension awareness groups
Known	0.838 (0.805–0.871)	0.811 (0.758–0.864)	0.838 (0.809–0.867)
Unknown	0.844 (0.811–0.877)	0.849 (0.792–0.905)	0.810 (0.770–0.850)
Age-based groups
<50 yr	0.849 (0.784–0.913)	0.735 (0.608–0.863)	0.865 (0.822–0.908)
50–60 yr	0.843 (0.803–0.883)	0.852 (0.789–0.915)	0.811 (0.773–0.850)
60–70 yr	0.825 (0.792–0.859)	0.840 (0.791–0.889)	0.823 (0.782–0.863)
Regular exercise groups*
Yes	0.839 (0.811–0.876)	0.854 (0.802–0.905)	0.857 (0.818–0.896)
No	0.839 (0.806–0.873)	0.817 (0.763–0.871)	0.816 (0.787–0.845)

^*This information was obtained by asking “Do you undertake regular exercise every week?”

Abbreviations: AUROC, area under the ROC curve; HbA_1c, hemoglobin A_1c; CI, confidence interval.