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Comparative Study
. 2016:2016:5342304.
doi: 10.1155/2016/5342304. Epub 2016 Feb 17.

The Association between HbA1c and Cardiovascular Disease Markers in a Remote Indigenous Australian Community with and without Diagnosed Diabetes

Luke W Arnold  1 , Wendy E Hoy  1 , Suresh K Sharma  2 , Zhiqiang Wang  1
Affiliations
Comparative Study

The Association between HbA1c and Cardiovascular Disease Markers in a Remote Indigenous Australian Community with and without Diagnosed Diabetes

Luke W Arnold et al. J Diabetes Res. 2016.

Abstract

Objectives: This study investigates the burden of cardiovascular risk markers in people with and without diabetes in a remote Indigenous Australian community, based on their HbA1c concentration.

Methods: This study included health screening exams of 1187 remote Indigenous residents over 15 years old who represented 70% of the age-eligible community. The participants were stratified by HbA1c into 5 groups using cut-off points recommended by international organisations. The associations of traditional cardiovascular risk markers with HbA1c groups were assessed using logistic and linear regressions and ANOVA models.

Results: Of the 1187 participants, 158 (13%) had a previous diabetes diagnosis, up to 568 (48%) were at high risk (5.7-6.4% (39-46 mmol/mol) HbA1c), and 67 (6%) potential new cases of diabetes (≥6.5% (48 mmol/mol)) were identified. Individuals with higher HbA1c levels were more likely to have albuminuria (OR 3.14, 95% CI 1.26-7.82) and dyslipidaemia (OR 2.37, 95% CI 1.29-4.34) and visited the clinic more often (OR 2.52, 95% CI 1.26-4.99). Almost all traditional CVD risk factors showed a positive association with HbA1c.

Conclusions: Screening in this remote Indigenous Australian community highlights the high proportion of individuals who are at high risk of diabetes as indicated by HbA1c and who also had an accentuated cardiovascular risk profile.

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Figures

Figure 1
Figure 1
The number of cardiovascular risk factors identified in participants with and without a prior diabetes diagnosis by HbA1c categories. The number of cardiovascular risk factors was the sum of the following possible risk factors: micro/macroalbuminuria, hypertension, dyslipidaemia, current smoking, and high WC. ∗Participants without a prior diagnosis of diabetes. ∗∗Participants with a known diabetes diagnosis.
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References

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