Abstract

There are arguments as to whether haemoglobin A1c (HbA1c) better predicts Metabolic syndrome (MetS) than fasting plasma glucose. The aim of the study was to explore the comparative abilities of HbA1c and Fasting plasma glucose (FPG) in predicting cardiometabolic risk among apparently healthy adults in the Tamale metropolis. This study was a cross-sectional study conducted in the Tamale metropolis from September, 2017, to January, 2018, among one hundred and sixty (160) apparently healthy normoglycemic adults. A self-designed questionnaire was administered to gather sociodemographic data. Anthropometric and haemodynamic data were also taken and blood samples collected for haemoglobin A1c (HbA1c), fasting plasma glucose (FPG), and lipid profile. MetS was classified using the harmonised criteria as indicated in the joint interim statement (JIS). Out of the 160 participants, 42.5% were males and 57.5% were females. FPG associated better with MetS and other cardiovascular risk markers, compared to HbA1c. FPG had the largest area under curve for predicting MetS and its components. This study shows a stronger association between FPG and MetS compared with haemoglobin A1c; it also provides evidence of a superior ability of FPG over HbA1c in predicting MetS and other adverse cardiovascular outcomes in apparently heathy normoglycemic individuals.

Highlights

  • Metabolic syndrome (MetS) is a set of closely associated cardiometabolic risks [1], like obesity, dyslipidemia, hypertension, and hyperglycemia and is seen as a powerful indicator of diabetes and cardiovascular disease (CVD) [2, 3]

  • The prevalence of metabolic syndrome continues to be on the rise; this is in part as a result of rapid urbanization with the related variations in nutrition and physical activity [4]

  • It has been considered a preferable tool since haemoglobin A1c (HbA1c) assay has superior technical advantages compared to the estimation of plasma glucose; it can be measured in the nonfasted state and has greater reproducibility than fasting glucose [9, 10]

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Summary

Introduction

Metabolic syndrome (MetS) is a set of closely associated cardiometabolic risks [1], like obesity, dyslipidemia, hypertension, and hyperglycemia and is seen as a powerful indicator of diabetes and cardiovascular disease (CVD) [2, 3]. Worldwide the prevalence of metabolic syndrome has been reported as being between 10% and 84% [5]. In Africa, prevalence of 2.1% to 34.7% has been reported in several studies from around the continent [6, 7]. In Ghana, a prevalence of metabolic syndrome between 6% and 21.2% has been reported [8] using different criteria. Haemoglobin A1c (HbA1c), a result of nonenzymatic glycosylation of the 훽-chain of haemoglobin, is made in proportion to the rise in blood glucose levels. HbA1c is a set-up marker of long haul glycemic control in individuals with diabetes mellitus (DM), and increased HbA1c levels are linked with an increased risk for later microvascular and macrovascular illness [11]

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