title: Fasting plasma glucose concentrations for specified HbA1c goals in Korean populations: data from the Fifth Korea National Health and Nutrition Examination Survey (KNHANES V-2, 2011).
abstract: OBJECTIVE
  To examine the correlation between the fasting plasma glucose and HbA1c levels using regression equation and to assess the average fasting plasma glucose levels for the specific HbA1c (A1C) goals in the patients with diabetes using each A1C-and fasting plasma glucose-based diagnostic criteria.
  
  
  METHODS
  This study included data from 4481 participants with A1C and fasting plasma glucose, but with no diabetic medications in the Korean National Health and Nutritional Examination Survey 2011. The correlation between fasting plasma glucose and A1C was examined using linear regression models.
  
  
  RESULTS
  The A1C levels corresponding to the fasting plasma glucose of 5.5 and 7 mmol/L were 5.75 and 6.42 %. However, in the subjects with diabetes diagnosed by the A1C criteria only, 5.5 and 7 mmol/L in the fasting plasma glucose predicted A1C of 6.49 and 7.14 % respectively. The average fasting plasma glucose levels to achieve specified A1C levels of 5.0-5.9, 6.0-6.9, 7.0-7.9, 8.0-8.9, and 9.0-9.9 % were 5.1, 6.1, 7.7, 8.8 and 11.2 mmol/L, respectively.
  
  
  CONCLUSIONS
  The association between A1C and fasting plasma glucose levels is in concordance with the existing criteria for diagnosis of diabetes. However, the average fasting plasma glucose concentrations to achieve targeted A1C may be lower than those in western populations.
authors: Division of Endocrinology, Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, 7, Keunjaebong-gil,Hwaseong-si, Gyeonggi-do, 445-907, Republic of Korea.
authors: Sangmo
authors: S
authors: Hong
authors: Division of Endocrinology and Metabolism, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, 896 Pyeongchon-dong, Dongan-gu, Anyang, Gyeonggi-do Republic of Korea.
authors: Jun Goo
authors: JG
authors: Kang
authors: Division of Endocrinology and Metabolism, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, 896 Pyeongchon-dong, Dongan-gu, Anyang, Gyeonggi-do Republic of Korea.
authors: Chul Sik
authors: CS
authors: Kim
authors: Division of Endocrinology and Metabolism, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, 896 Pyeongchon-dong, Dongan-gu, Anyang, Gyeonggi-do Republic of Korea.
authors: Seong Jin
authors: SJ
authors: Lee
authors: Department of Endocrinology and Metabolism, Hanyang University Guri Hospital, Gyomun 1(il)-dong, Guri-si, Gyeonggi-do 471-701 Republic of Korea.
authors: Chang Beom
authors: CB
authors: Lee
authors: Division of Endocrinology and Metabolism, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, 896 Pyeongchon-dong, Dongan-gu, Anyang, Gyeonggi-do Republic of Korea.
authors: Sung-Hee
authors: SH
authors: Ihm
keywords: Diabetes mellitus; Diagnosis; Glucose; Glycated; Hemoglobin A