The relation between parameters from homeostasis model assessment and glycemic control in type 2 diabetes

J Med Assoc Thai. 2007 Nov;90(11):2284-90.

Abstract

Objective: To determine the association of insulin sensitivity and pancreatic beta-cell function parameters assessed by the homeostasis model assessment (HOMA) and glycemic control, and their potential utilization in the clinical care of patients with type 2 diabetes mellitus.

Material and method: The HOMA indices were assessed in 204 (62 males, 142 females) type 2 diabetic outpatients aged 60.7 +/- 10.9 years. All patients were non-insulin treated for their diabetes. The correlation between variables including logarithmically transformed HOMA-%S and HOMA-%B, body mass index (BMI) and duration of diabetes to glycemic control were assessed The value of the disposition index (HOMA-%SxHOMA-%B) that best discriminated patients with good glycemic control (HbA1C < 7%) from those without (HbA1C > or = 7%) was determined.

Results: Both log (HOMA-%S) and log (HOMA-%B) were inversely related to HbA1C with comparable degrees of association (beta = -0.62, p < 0.001 and beta = -0.61, p < 0.001, respectively). The log-transformed disposition index of at least 3.57 had a sensitivity of 74.2% and a specificity of 67.6% in classifying patients as having HbA1C < 7%. The result suggested that in order to achieve acceptable glycemic control, oral hypoglycemic agents should be adjusted to maximize the likelihood of the log-transformed disposition index reaching 3.57.

Conclusions: Glycemic control in diabetic patients partially depends on both insulin sensitivity and pancreatic beta-cell function. Assessing both parameters with the HOMA model is likely to result in a more rational approach for achieving better glycemic control in type 2 diabetic patients.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Blood Glucose*
  • Body Mass Index
  • Diabetes Mellitus, Type 2 / physiopathology*
  • Female
  • Glycated Hemoglobin A
  • Health Status Indicators
  • Hemostasis*
  • Humans
  • Hypoglycemic Agents
  • Male
  • Middle Aged
  • Models, Biological
  • Models, Theoretical
  • Pilot Projects
  • Sickness Impact Profile

Substances

  • Blood Glucose
  • Glycated Hemoglobin A
  • Hypoglycemic Agents