Table 1. Prevalence of type 2 diabetes in Korea according to national health insurance claims and national preventive health care database from 2006 to 2013.

	2006	2007	2008	2009	2010	2011	2012	2013
Health insurance claims database
Total population	29,340,486	29,964,692	30,784,595	31,446,745	32,113,334	32,755,158	33,397,816	33,897,232
Age of total population(year)	49.0 ± 13.7	49.4 ± 13.8	49.7 ± 13.8	50.0 ± 13.9	50.3 ± 13.9	50.5 ± 14	50.8 ± 14.1	51.2 ± 14.2
Prevalent cases	1,655,495	1,817,040	1,979,403	2,138,344	2,287,430	2,455,658	2,590,519	2,720,777
Age of prevalent cases(year)	60.7 ± 11.7	61.1 ± 11.8	61.4 ± 11.8	61.7 ± 11.9	62.0 ± 11.9	62.3 ± 11.9	62.6 ± 11.9	62.9 ± 12.0
Prevalence rate(%)	5.6	6.1	6.4	6.8	7.1	7.5	7.8	8.0
Sex
Female	5.3	5.7	6.0	6.3	6.6	6.9	7.1	7.3
Male	6.0	6.5	6.9	7.4	7.7	8.2	8.5	8.8
Age
30–39	0.7	0.8	0.8	0.8	0.8	0.9	0.9	0.9
40–49	3.0	3.1	3.2	3.3	3.3	3.4	3.4	3.5
50–59	7.7	8.0	8.2	8.4	8.5	8.7	8.8	8.9
60–69	13.7	14.3	14.8	15.3	15.8	16.4	16.5	16.6
70–79	15.5	16.7	17.7	18.6	19.5	20.4	21.0	21.5
80–	9.8	11.0	12.1	13.2	14.1	15.1	15.9	16.7
Preventive health care database
Total population	7,229,856	6,642,441	8,284,141	9,186,594	10,225,856	10,456,856	11,015,182	10,610,669
Age of total population(year)	48.6 ± 12.2	49.4 ± 12.6	49.2 ± 12.3	50.1 ± 12.5	50.0 ± 12.5	50.2 ± 12.6	50.5 ± 12.5	50.8 ± 12.7
Age of prevalent cases(year)	56.5 ± 11.7	57.3 ± 11.9	57 ± 11.7	57.8 ± 11.6	58.1 ± 11.6	58.3 ± 11.7	58.6 ± 11.5	59.0 ± 11.7
Prevalence rate(%)	8.4	9.0	8.9	9.9	9.9	10.3	10.5	10.9
Sex
Female	7.3	8.1	7.5	8.5	8.4	8.7	8.8	9.3
Male	9.2	9.6	9.9	11.0	11.2	11.5	11.9	12.2
Age
30–39	2.6	2.7	2.6	2.8	2.6	2.7	2.5	2.6
40–49	5.7	6.1	6.2	6.1	6.0	6.1	6.1	6.2
50–59	10.9	11.1	11.2	11.8	11.8	11.9	12.1	12.4
60–69	16.5	16.6	16.8	18.0	18.6	18.9	19.1	19.6
70–79	18.8	19.3	20.0	20.7	21.8	22.7	23.2	23.8
80–	18.3	18.5	18.9	19.1	20.0	21.2	21.9	22.8