| New aspects of HbA1c as a risk factor for cardiovascular diseases in type 2 diabetes: an observational study from the Swedish National Diabetes Register (NDR). | |
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MedLine Citation:
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PMID: 20804517 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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AIMS: To analyse the association between glycosylated haemoglobin A1c (HbA1c) and cardiovascular disease (CVD) in patients with type 2 diabetes in the Swedish National Diabetes Register (NDR). METHODS: An observational study of 18 334 patients (age 30-79 years, previous CVD in 18%, baseline HbA1c 5.0-10.9%) who were followed for 6 years (mean 5.6 years) from 1997/1998 until 2003. RESULTS: Hazard ratios per 1% unit increase in baseline or updated mean HbA1c for fatal/nonfatal coronary heart disease (CHD), CVD and total mortality were 1.11-1.13, 1.10-1.11 and 1.09-1.10, respectively (all P < 0.001), adjusted for several risk factors and clinical characteristics in Cox regression. Adjusted 6-year event rates increased with higher baseline or updated mean HbA1c with no J-shaped risk curves, in all patients and also when subgrouping by shorter (mean 3 years) or longer (mean 14 years) diabetes duration, by presence or absence of previous CVD, or by treatment with oral hypoglycaemic agents (OHAs) or insulin. Risk reductions of 20% for CHD and 16% for CVD (P < 0.001) were found in patients with a baseline mean HbA1c of 6.5%, compared to those with a mean level of 7.5%. Compared to OHA-treated patients, insulin-treated patients had an increased risk of total mortality, due almost exclusively to an increased risk of non-CVD mortality, and due less to a weakly significant increased risk of fatal CVD. HbA1c was not associated with non-CVD mortality. CONCLUSIONS: This observational study showed progressively increasing risks of CHD, CVD and total mortality with higher HbA1c, and no risk increase at low HbA1c levels even with longer diabetes duration, previous CVD or treatment with either insulin or OHAs. Patients achieving HbA1c <7% showed benefits for risk reduction. |
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Authors:
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K Eeg-Olofsson; J Cederholm; P M Nilsson; B Zethelius; A-M Svensson; S Gudbjörnsdóttir; B Eliasson |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of internal medicine Volume: 268 ISSN: 1365-2796 ISO Abbreviation: J. Intern. Med. Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-10-22 Completed Date: 2010-11-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8904841 Medline TA: J Intern Med Country: England |
Other Details:
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Languages: eng Pagination: 471-82 Citation Subset: IM |
Copyright Information:
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© 2010 The Association for the Publication of the Journal of Internal Medicine. |
Affiliation:
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Institute of Medicine, Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, Sweden. katarina.eeg-olofsson@vgregion.se |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Biological Markers / blood Cardiovascular Diseases / blood*, epidemiology, mortality Coronary Disease / epidemiology Diabetes Mellitus, Type 2 / blood*, complications, mortality Female Follow-Up Studies Hemoglobin A, Glycosylated / metabolism* Humans Male Middle Aged Proportional Hazards Models Risk Factors Stroke / epidemiology |
| Chemical | |
Reg. No./Substance:
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0/Biological Markers; 0/Hemoglobin A, Glycosylated |
| Comments/Corrections | |
Comment In:
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J Intern Med. 2010 Nov;268(5):468-70
[PMID:
20964737
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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