Table 2

Proportion of undiagnosed diabetes* among participants with measured HbA1c by sex and 15-year age groups in Tromsø 7 and Know Your Heart

Know your HeartTromsø 7
Diabetes*† (n)Undiagnosed diabetes*‡
% of diabetes cases (n)
Diabetes (n)Undiagnosed diabetes
% of diabetes cases (n)
Men
 Total sample20736.9 (76)50718.5 (94)
 40–54 years old5538.3 (23)19119.9 (38)
 55–69 years old15237.2 (58)31617.7 (56)
Women
 Total sample34226.8 (91)38912.3 (48)
 40–54 years old5545.6 (26)1448.3 (12)
 55–69 years old28723.7 (68)24514.7 (36)
  • *Number of diabetes and undiagnosed diabetes cases presented only for participants with complete data on HbA1c.

  • †Diabetes among participants with measured HbA1c was defined as HbA1c ≥6.5% (48 mmol/mol) and/or self-reported diabetes and/or use of medication with ATC code A10 (antidiabetics) according to the Anatomical Therapeutic Chemical (ATC) classification.

  • ‡Undiagnosed diabetes among participants with measured HbA1c was defined as HbA1c ≥6.5% (48 mmol/mol), no self-reported diabetes and no diabetes medication use.

  • HbA1c, glycated hemoglobin.