HbA1c measured in stored erythrocytes is positively linearly associated with mortality in individuals with diabetes mellitus.
<h4>Introduction</h4>Observational studies have shown that glycated haemoglobin (HbA(1c)) is related to mortality, but the shape of the association is less clear. Furthermore, disease duration and medication may modify this association. This observational study explored the association b...
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oai:doaj.org-article:c212d76627cf477dbbe7d4a1db356b942021-11-18T07:15:36ZHbA1c measured in stored erythrocytes is positively linearly associated with mortality in individuals with diabetes mellitus.1932-620310.1371/journal.pone.0038877https://doaj.org/article/c212d76627cf477dbbe7d4a1db356b942012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22719972/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Introduction</h4>Observational studies have shown that glycated haemoglobin (HbA(1c)) is related to mortality, but the shape of the association is less clear. Furthermore, disease duration and medication may modify this association. This observational study explored the association between HbA(1c) measured in stored erythrocytes and mortality. Secondly, it was assessed whether disease duration and medication use influenced the estimates or were independently associated with mortality.<h4>Methods</h4>Within the European Prospective Investigation into Cancer and Nutrition a cohort was analysed of 4,345 individuals with a confirmed diagnosis of diabetes at enrolment. HbA(1c) was measured in blood samples stored up to 19 years. Multivariable Cox proportional hazard regression models for all-cause mortality investigated HbA(1c) in quartiles as well as per 1% increment, diabetes medication in seven categories of insulin and oral hypoglycaemic agents, and disease duration in quartiles.<h4>Results</h4>After a median follow-up of 9.3 years, 460 participants died. Higher HbA(1c) was associated with higher mortality: Hazard Ratio for 1%-increase was 1.11 (95% CI 1.06, 1.17). This association was linear (P-nonlinearity = 0.15) and persistent across categories of medication use, disease duration, and co-morbidities. Compared with metformin, other medication types were not associated with mortality. Longer disease duration was associated with mortality, but not after adjustment for HbA(1c) and medication.<h4>Conclusion</h4>This prospective study showed that persons with lower HbA(1c) had better survival than those with higher HbA(1c). The association was linear and independent of disease duration, type of medication use, and presence of co-morbidities. Any improvement of HbA(1c) appears to be associated with reduced mortality risk.Diewertje SluikHeiner BoeingJukka MontonenRudolf KaaksAnnekatrin LukanovaAnnelli SandbaekKim OvervadLarraitz ArriolaEva ArdanazCalogero SaievaSara GrioniRosario TuminoCarlotta SacerdoteAmalia MattielloAnnemieke M W SpijkermanDaphne L van der AJoline W J BeulensSusan van DierenPeter M NilssonLeif C GroopPaul W FranksOlov RolandssonBas Bueno-de-MesquitaUte NöthlingsPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 6, p e38877 (2012) |
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Medicine R Science Q |
| spellingShingle |
Medicine R Science Q Diewertje Sluik Heiner Boeing Jukka Montonen Rudolf Kaaks Annekatrin Lukanova Annelli Sandbaek Kim Overvad Larraitz Arriola Eva Ardanaz Calogero Saieva Sara Grioni Rosario Tumino Carlotta Sacerdote Amalia Mattiello Annemieke M W Spijkerman Daphne L van der A Joline W J Beulens Susan van Dieren Peter M Nilsson Leif C Groop Paul W Franks Olov Rolandsson Bas Bueno-de-Mesquita Ute Nöthlings HbA1c measured in stored erythrocytes is positively linearly associated with mortality in individuals with diabetes mellitus. |
| description |
<h4>Introduction</h4>Observational studies have shown that glycated haemoglobin (HbA(1c)) is related to mortality, but the shape of the association is less clear. Furthermore, disease duration and medication may modify this association. This observational study explored the association between HbA(1c) measured in stored erythrocytes and mortality. Secondly, it was assessed whether disease duration and medication use influenced the estimates or were independently associated with mortality.<h4>Methods</h4>Within the European Prospective Investigation into Cancer and Nutrition a cohort was analysed of 4,345 individuals with a confirmed diagnosis of diabetes at enrolment. HbA(1c) was measured in blood samples stored up to 19 years. Multivariable Cox proportional hazard regression models for all-cause mortality investigated HbA(1c) in quartiles as well as per 1% increment, diabetes medication in seven categories of insulin and oral hypoglycaemic agents, and disease duration in quartiles.<h4>Results</h4>After a median follow-up of 9.3 years, 460 participants died. Higher HbA(1c) was associated with higher mortality: Hazard Ratio for 1%-increase was 1.11 (95% CI 1.06, 1.17). This association was linear (P-nonlinearity = 0.15) and persistent across categories of medication use, disease duration, and co-morbidities. Compared with metformin, other medication types were not associated with mortality. Longer disease duration was associated with mortality, but not after adjustment for HbA(1c) and medication.<h4>Conclusion</h4>This prospective study showed that persons with lower HbA(1c) had better survival than those with higher HbA(1c). The association was linear and independent of disease duration, type of medication use, and presence of co-morbidities. Any improvement of HbA(1c) appears to be associated with reduced mortality risk. |
| format |
article |
| author |
Diewertje Sluik Heiner Boeing Jukka Montonen Rudolf Kaaks Annekatrin Lukanova Annelli Sandbaek Kim Overvad Larraitz Arriola Eva Ardanaz Calogero Saieva Sara Grioni Rosario Tumino Carlotta Sacerdote Amalia Mattiello Annemieke M W Spijkerman Daphne L van der A Joline W J Beulens Susan van Dieren Peter M Nilsson Leif C Groop Paul W Franks Olov Rolandsson Bas Bueno-de-Mesquita Ute Nöthlings |
| author_facet |
Diewertje Sluik Heiner Boeing Jukka Montonen Rudolf Kaaks Annekatrin Lukanova Annelli Sandbaek Kim Overvad Larraitz Arriola Eva Ardanaz Calogero Saieva Sara Grioni Rosario Tumino Carlotta Sacerdote Amalia Mattiello Annemieke M W Spijkerman Daphne L van der A Joline W J Beulens Susan van Dieren Peter M Nilsson Leif C Groop Paul W Franks Olov Rolandsson Bas Bueno-de-Mesquita Ute Nöthlings |
| author_sort |
Diewertje Sluik |
| title |
HbA1c measured in stored erythrocytes is positively linearly associated with mortality in individuals with diabetes mellitus. |
| title_short |
HbA1c measured in stored erythrocytes is positively linearly associated with mortality in individuals with diabetes mellitus. |
| title_full |
HbA1c measured in stored erythrocytes is positively linearly associated with mortality in individuals with diabetes mellitus. |
| title_fullStr |
HbA1c measured in stored erythrocytes is positively linearly associated with mortality in individuals with diabetes mellitus. |
| title_full_unstemmed |
HbA1c measured in stored erythrocytes is positively linearly associated with mortality in individuals with diabetes mellitus. |
| title_sort |
hba1c measured in stored erythrocytes is positively linearly associated with mortality in individuals with diabetes mellitus. |
| publisher |
Public Library of Science (PLoS) |
| publishDate |
2012 |
| url |
https://doaj.org/article/c212d76627cf477dbbe7d4a1db356b94 |
| work_keys_str_mv |
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