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ABSTRACT: Aims
Our aim was to investigate the impact of glycemic variability (GV) on the relationship between glucose management indicator (GMI) and laboratory glycated hemoglobin A1c (HbA1c).Methods
Adult patients with type 1 diabetes mellitus (T1D) were enrolled from five hospitals in China. All subjects wore the iPro™2 system for 14 days before HbA1c was measured at baseline, 3 months and 6 months. Data derived from iPro™2 sensor was used to calculate GMI and GV parameters [standard deviation (SD), glucose coefficient of variation (CV), and mean amplitude of glycemic excursions (MAGE)]. Differences between GMI and laboratory HbA1c were assessed by the absolute value of the hemoglobin glycation index (HGI).Results
A total of 91 sensor data and corresponding laboratory HbA1c, as well as demographic and clinical characteristics were analyzed. GMI and HbA1c were 7.20 ± 0.67% and 7.52 ± 0.73%, respectively. The percentage of subjects with absolute HGI 0 to lower than 0.1% was 21%. GMI was significantly associated with laboratory HbA1c after basic adjustment (standardized β = 0.83, p < 0.001). Further adjustment for SD or MAGE reduced the standardized β for laboratory HbA1c from 0.83 to 0.71 and 0.73, respectively (both p < 0.001). In contrast, the β remained relatively constant when further adjusting for CV. Spearman correlation analysis showed that GMI and laboratory HbA1c were correlated for each quartile of SD and MAGE (all p < 0.05), with the corresponding correlation coefficients decreased across ascending quartiles.Conclusions
This study validated the GMI formula using the iPro™2 sensor in adult patients with T1D. GV influenced the relationship between GMI and laboratory HbA1c.
SUBMITTER: Liu H
PROVIDER: S-EPMC7281639 | biostudies-literature | 2020
REPOSITORIES: biostudies-literature
Liu Hongxia H Yang Daizhi D Deng Hongrong H Xu Wen W Lv Jing J Zhou Yongwen Y Luo Sihui S Zheng Xueying X Liang Hua H Yao Bin B Qiu Liling L Wang Funeng F Liu Fang F Yan Jinhua J Weng Jianping J
Therapeutic advances in endocrinology and metabolism 20200608
<h4>Aims</h4>Our aim was to investigate the impact of glycemic variability (GV) on the relationship between glucose management indicator (GMI) and laboratory glycated hemoglobin A1c (HbA1c).<h4>Methods</h4>Adult patients with type 1 diabetes mellitus (T1D) were enrolled from five hospitals in China. All subjects wore the iPro<sup>™</sup>2 system for 14 days before HbA1c was measured at baseline, 3 months and 6 months. Data derived from iPro<sup>™</sup>2 sensor was used to calculate GMI and GV pa ...[more]