Table 4. The comparison of the prevalence of diabetes in 2002 and 2010 in the southern Chinese adults 18 years of age and above.

Screening methods	The GNHS 2002		The GHS 2010
	n	Diabetes	n	Diabetes
Self-reporting	102	1.4 (1.1, 1.8)	99	2.8 (1.3, 4.3)
Self-reporting/FPG *	193	2.9 (2.0, 3.7)	432	11.9 (6.2, 17.7)
Self-reporting/FG/partly 2-h PG †	193	2.9 (2.0, 3.7)	501	13.8 (10.2, 17.3)
Self-reporting/FG/all 2-h PG ‡	-	-	528	14.6 (13.3, 15.9)
Self-reporting/FG/2-h PG/HbA1c ||||	-	-	753	21.7 (17.3, 26.1)

^*: diabetes was diagnosed by self-reporting in an interview and with fasting plasma glucose (FPG) test.

^†: diabetes was diagnosed by self-reporting in an interview, with FPG test and with 2-hour post-load plasma glucose (2-h PG) test for those with an IFG.

^‡: diabetes was diagnosed by self-reporting in an interview, with FPG test and with 2-h PG test for all participants.

||||: diabetes was diagnosed by self-reporting in an interview, with FPG, with 2-h PG test and with HbA1c measurement.