High prevalence of diabetes and intermediate hyperglycemia – The Brazilian Longitudinal Study of Adult Health (ELSA-Brasil)

Table 2 Prevalence of diabetes, baseline of the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil), n = 15102, 2008-2010

Diabetes definitions	Total cases			Cases previously diagnosed			Cases previously undiagnosed			Percent undiagnosed*
	n	%	95% CI	n	%	95% CI	n	%	95% CI	%	95% CI
1. Previously diagnosed (self-report or medication use) or undiagnosed reaching:
a. diabetes cut-off for HbA_1C, FPG or 2hPG	2970	19.7	19.0 – 20.3	1473	9.8	9.3 – 10.2	1497	9.9	9.4 – 10.4	50.4	48.6-52.2
b. diabetes cut-off for FPG or 2hPG	2688	17.8	17.2 – 18.4	1473	9.8	9.3 – 10.2	1215	8.0	7.6 – 8.5	45.2	43.3-47.1
c. diabetes cut-off for FPG	2280	15.1	14.5 – 15.7	1473	9.8	9.3 – 10.2	807	5.3	5.0 – 5.7	35.4	33.4-37.4
2. Previously diagnosed (restricted definition**) or undiagnosed reaching:
a. diabetes cut-off for HbA_1C, FPG or 2hPG	2778	18.4	17.8 – 19.0	1202	8.0	7.5 – 8.4	1576	10.4	10.0 – 10.9	56.7	54.9-58.6
b. diabetes cut-off for FPG or 2hPG	2486	16.5	15.9 – 17.1	1202	8.0	7.5 – 8.4	1284	8.5	8.1 – 9.0	51.7	49.7-53.6
c. diabetes cut-off for FPG	2055	13.6	13.1 – 14.2	1202	8.0	7.5 – 8.4	853	5.7	5.3 – 6.0	41.5	39.4-43.6

HbA_1C = glycated hemoglobin; FPG = fasting plasma glucose; 2hPG = plasma glucose 2 h after a glucose load.
*Cases previously undiagnosed / Total cases.
**Requiring that a previous diagnosis of diabetes be accompanied by medication use or be verified by a laboratory result.
Diabetes cut offs: FPG (≥7.0 mmol/L); 2-hour PG (≥11.1 mmol/L); or HbA1C (≥6.5%; ≥47.5 mmol/mol).