Table 2. The prevalence of diabetes using HbA1c, FPG, and 2-h PG criteria according to age group.

Diagnostic criterion	<65 Years (n=153)	≥65 Years (n=156)	P value
HbA1c	124 (81)	96 (61.5)	<0.001
FPG	124 (81)	71 (45.5)	<0.001
2-h PG	140 (91.5)	132 (84.6 )	NS

Values are presented as number (%). P values were calculated by the chi-square test.

HbA1c, glycosylated hemoglobin; FPG, fasting plasma glucose; 2-h PG, 2-hour postload glucose; NS, not significant.