The triglyceride-glucose index is a more powerful surrogate marker for predicting the prevalence and incidence of type 2 diabetes mellitus than the homeostatic model assessment of insulin resistance

Diabetes Res Clin Pract. 2021 Oct;180:109042. doi: 10.1016/j.diabres.2021.109042. Epub 2021 Sep 17.

Abstract

Aims: Insulin resistance is an independent risk factor for developing type 2 diabetes. Therefore, this study compared the predictability of the triglyceride-glucose (TyG) index and the homeostatic model assessment of insulin resistance (HOMA-IR) for the prevalence and incidence of type 2 diabetes.

Methods: We analyzed data from 9730 adults aged 40-69 years at baseline and 7783 participants without diabetes who were followed up in the Korean Genome and Epidemiology Study survey. From 2001 to 2002 (baseline survey) to 2013-2014, this survey was conducted biennially (six follow-ups). The average follow-up period was 9.0 years.

Results: The TyG index showed better predictability for the prevalence of type 2 diabetes than HOMA-IR (TyG index: 0.784, HOMA-IR: 0.728, p < 0.001). The area under the time-dependent receiver operating characteristic curve of the TyG index for incident type 2 diabetes was 0.640 (0.628-0.652), which was significantly higher than that of HOMA-IR [0.531 (0.521-0.541)] (p < 0.001).

Conclusions: The TyG index is superior to HOMA-IR for predicting type 2 diabetes. The TyG index could, therefore, be more useful for the early detection and prevention of type 2 diabetes.

Keywords: HOMA-IR; Insulin resistance; TyG index; Type 2 diabetes.

MeSH terms

  • Adult
  • Biomarkers
  • Blood Glucose
  • Diabetes Mellitus, Type 2* / epidemiology
  • Glucose
  • Humans
  • Incidence
  • Insulin Resistance*
  • Prevalence
  • Triglycerides

Substances

  • Biomarkers
  • Blood Glucose
  • Triglycerides
  • Glucose