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

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

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