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High prevalence of known and unknown type 2 diabetes mellitus among middle-aged Norwegians: Data from the Akershus cardiac examination (ACE) 1950 study

Session Poster Session 3

Speaker Doctor Trygve Berge

Event : ESC Congress 2018

  • Topic : preventive cardiology
  • Sub-topic : Diabetes and the Heart, Other
  • Session type : Poster Session

Authors : T Berge (Gjettum,NO), MN Lyngbakken (Lorenskog,NO), P Smith (Oslo,NO), T Omland (Oslo,NO), K Steine (Oslo,NO), H Rosjo (Oslo,NO), A Tveit (Oslo,NO)

T. Berge1 , M.N. Lyngbakken2 , P. Smith3 , T. Omland3 , K. Steine3 , H. Rosjo3 , A. Tveit3 , 1Bærum Hospital, Vestre Viken Hospital Trust, Department of Medical Research - Gjettum - Norway , 2Akershus University Hospital, Division of Medicine - Lorenskog - Norway , 3University of Oslo, Institute of Clinical Medicine - Oslo - Norway ,

On behalf: ACE 1950 study group

Diabetes and the Heart, Other

European Heart Journal ( 2018 ) 39 ( Supplement ), 494

Background: The prevalence of type 2 diabetes mellitus (T2DM) is increasing worldwide. More knowledge on the proportion of undiagnosed diabetes in the population may be useful for future prevention strategies. Accordingly; we aimed to report prevalence of known and unknown T2DM, as well as risk factors associated with unknown T2DM, in a middle-aged Norwegian population.

Methods: All women and men born in 1950, residing in Akershus county, Norway, were invited in the Akershus Cardiac Examination (ACE) 1950 study. All participants underwent a clinical examination including fasting blood glucose (FBG) and HbA1c. Known T2DM was defined as self-reported history of T2DM or daily use of antidiabetic drugs, and unknown T2DM was defined as the absence of any of these combined with FBG ≥7.0 mmol/L and HbA1c ≥6.5%. Risk factors associated with unknown T2DM were assessed by multivariate logistic regression.

Results: A total of 3706 among 5827 eligible subjects were included. Mean age was 63.9±0.7 years, 48.8% were women. Known diabetes was reported in 7.2% (9.6% men, 4.6% women; p<0.001). Unknown T2DM was found in 1.3% (1.9% men, 0.7% women; p=0.001), and the total prevalence of diabetes was 8.6% (11.6% in men, 5.4% women; p<0.001). Variables associated with unknown T2DM are presented in Table.

Conclusion: In a contemporary Norwegian population cohort aged 64 years, we identified a considerable proportion of previously unknown T2DM in both sexes, but particularly in men. Elevated BMI, systolic blood pressure, triglycerides, low HDL-cholesterol and a family history of diabetes were associated with unknown T2DM.

Risks associated with unknown T2DM
Univariate OR (95% CI)pMultivariate OR (95% CI)p
Male sex2.90 (1.54–5.47)0.0011.92 (0.95–3.86)0.07
Body mass index1.17 (1.11–1.23)<0.0011.10 (1.04–1.17)<0.01
Systolic blood pressure (per 10 mmHg)1.22 (1.07–1.40)<0.011.18 (1.01–1.38)0.03
Fasting triglycerides1.89 (1.56–2.29)<0.0011.45 (1.16–1.80)0.001
HDL-cholesterol0.08 (0.03–0.19)<0.0010.24 (0.08–0.69)<0.01
History of CVD0.75 (0.23–2.42)0.63
Impaired kidney function-1.14 (0.27–4.74)0.86
Daily smoking0.82 (0.35–1.93)0.65
Higher education0.75 (0.42–1.32)0.32
Sedentary lifestyle1.76 (0.94–3.29)0.081.18 (0.61–2.29)0.63
1 first degree relative with diabetes2.99 (1.62–5.51)<0.0012.62 (1.39–4.95)<0.01
≥2 first degree relatives with diabetes10.54 (4.41–25.17)<0.0019.31 (3.63–23.88)<0.001
All variables with p<0.20 in univariate analyses are included in the multivariate analysis.
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