4.6 Article

Trajectories of fasting plasma glucose variability and mortality in type 2 diabetes

Journal

DIABETES & METABOLISM
Volume 44, Issue 2, Pages 121-128

Publisher

MASSON EDITEUR
DOI: 10.1016/j.diabet.2017.09.001

Keywords

Diabetes; Fasting plasma glucose; Glucose variability; Mortality; Trajectory

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Aim. - To investigate the effect of changes in fasting plasma glucose (FPG) variability, as assessed by 2 year trajectories of FPG variability, on mortality risk in patients with type 2 diabetes (T2D). Methods. - From 2009 to 2012, outpatients with T2D, aged > 18 years, were enrolled from a medical centre. FPG was measured every 3 months for 2 years in 3569 people. For each of the eight 3-month intervals, FPG variability and means were calculated, with variability defined as the coefficient of variation of FPG. Also, trajectories of FPG variability and means were determined separately, using group-based trajectory analysis with latent class growth models. These models were fitted using the SAS Proc Traj procedure. The primary outcome was all-cause mortality, which was followed-up to the end of 2014. Results. - Five distinct trajectories of FPG variability (low, increasing, fluctuating, decreasing and high) and means (well controlled, stable control, worsening control, improving control and poor control) were established. The five trajectories of mean FPG were all associated with the same mortality risk. In contrast, in comparison to the low FPG variability trajectory, the fluctuating, decreasing and high variability trajectories all had significantly higher risks of mortality, with respective hazards ratios of 2.63 (95% CI: 1.40-4.93; P = 0.003), 2.78 (95% Cl: 1.33-5.80; P = 0.007) and 4.44 (95% CI: 1.78-11.06; P = 0.001) after multivariable adjustment. Conclusion. - Changes in FPG variability were independently associated with increased mortality risk in patients with T2D. (C) 2017 Elsevier Masson SAS. All rights reserved.

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