1. Comparison of fasting plasma glucose and haemoglobin A1c point-of-care tests in screening for diabetes and abnormal glucose regulation in a rural low income setting.
- Author
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Mayega RW, Guwatudde D, Makumbi FE, Nakwagala FN, Peterson S, Tomson G, and Ostenson CG
- Subjects
- Adult, Diabetes Mellitus, Type 2 epidemiology, Female, Glucose Tolerance Test, Glycated Hemoglobin, Humans, Male, Middle Aged, Poverty, Prediabetic State epidemiology, Prevalence, Risk Factors, Uganda epidemiology, Blood Glucose metabolism, Diabetes Mellitus, Type 2 blood, Fasting blood, Prediabetic State blood, Protein Precursors blood, Rural Population
- Abstract
Aims: Glycated haemoglobin (HbA1C) has been suggested to replace glucose tests in identifying diabetes and pre-diabetes. We assessed agreement between fasting plasma glucose (FPG) and HbA1C rapid tests in classifying abnormal glucose regulation (AGR), and their utility for preventive screening in rural Africa., Methods: A population-based survey of 795 people aged 35-60 years was conducted in a mainly rural district in Uganda. FPG was measured using On-Call® Plus glucometers, and classified using World Health Organization (WHO) and American Diabetes Association (ADA) criteria. HbA1C was measured using A1cNow® kits and classified using ADA criteria. Body mass index and blood pressure were measured. Percentage agreement between the two tests was computed., Results: Using HbA1C, 11.3% of participants had diabetes compared with 4.8% for FPG. Prevalence of HbA1C-defined pre-diabetes (26.4%) was 1.2 times and 2.5 times higher than FPG-defined pre-diabetes using ADA (21.8%) and WHO (10.1%) criteria, respectively. With FPG as the reference, agreement between FPG and HbA1C in classifying diabetes status was moderate (Kappa=22.9; Area Under the Curve (AUC)=75%), while that for AGR was low (Kappa=11.0; AUC=59%). However, agreement was high (over 90%) among negative tests and among participants with risk factors for type 2 diabetes (obesity, overweight or hypertension). HbA1C had more procedural challenges than FPG., Conclusions: Although low in the general sample, agreement between HbA1C and FPG is excellent among persons who test negative with either test. A single test can therefore identify the majority at lower risk for type 2 diabetes. Nurses if trained can conduct these tests., (Copyright © 2014 The Authors. Published by Elsevier Ireland Ltd.. All rights reserved.)
- Published
- 2014
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