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Association of time in range with lower extremity atherosclerotic disease in type 2 diabetes mellitus: a prospective cohort study

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Abstract

Purpose

Time in range (TIR) has surfaced as a key continuous glucose monitoring (CGM)—derived metric, which was linked to diabetes-related outcomes. We aimed to investigate the association of TIR with the risk of lower extremity atherosclerotic disease (LEAD) among patients with type 2 diabetes.

Methods

A total of 1351 adult patients with type 2 diabetes were prospectively recruited from a single center in Shanghai, China. TIR was obtained from CGM data at baseline. LEAD was measured with color Doppler ultrasonography. Cox proportion hazard regression analysis was used to assess the association between TIR and the risk of incident/progressive LEAD.

Results

During a median follow-up of 7.4 years, 450 participants developed incident/progressive LEAD. The multivariable-adjusted hazard ratios (HRs) for incident/progressive LEAD across different levels of TIR ( > 85%, 71~85%, 51~70%, and ≤50%) were 1.00, 1.15 (95% confidence interval [CI] 0.87–1.52), 1.37 (95% CI 1.04–1.80) and 1.46 (95% CI 1.10–1.94) (P for trend = 0.004), respectively. With each 10% decrease in TIR, the multivariable-adjusted risk of incident/progressive LEAD increased by 7% (95% CI 1.02–1.11). Similar results were found in the association between TIR and incident LEAD as the secondary outcome (P for trend < 0.001).

Conclusions

The current study found an inverse association of TIR with the risk of LEAD among patients with type 2 diabetes.

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Data availability

Restrictions apply to the availability of data generated or analyzed during this study to preserve patient confidentiality or because they were used under license. Data are however available from the authors upon reasonable request.

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Acknowledgements

We appreciate all the involved doctors and nurses from Shanghai Jiao Tong University School of Medicine Affiliated Sixth People’s Hospital, as well as all the patients who participated in this study.

Author contributions

J.Z. designed the study. Y.W., J.L. and J.N. collected the data. Y.W. cleaned the data. Y.W. and J.L. performed statistical analysis and wrote the draft of the manuscript. J.Z. rescanned and edited the manuscript. All authors read and approved the final manuscript.

Funding

This work was funded by the National Key Research and Development Program of China (2018YFC2001004), the Shanghai Municipal Education Commission‐Gaofeng Clinical Medicine Grant (20161430), and the Shanghai “Rising Stars of Medical Talent” Youth Development Program–Outstanding Youth Medical Talents.

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Correspondence to Jian Zhou.

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The authors declare no competing interests.

Ethical approval and consent to participate

The study and the analysis plan were approved by the Research Ethics Committees of Shanghai Jiao Tong University School of Medicine Affiliated Sixth People’s Hospital. We have obtained informed consent from all participants.

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These authors contributed equally: Yaxin Wang, Jingyi Lu

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Wang, Y., Lu, J., Shen, Y. et al. Association of time in range with lower extremity atherosclerotic disease in type 2 diabetes mellitus: a prospective cohort study. Endocrine 76, 593–600 (2022). https://doi.org/10.1007/s12020-022-03038-3

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