Diabetes & Metabolism Journal

Review

Challenges in Diagnosing Type 1 Diabetes in Different Populations: Marian Rewers; Diabetes Metab J. 2012;36(2):90-97. Published online April 17, 2012; DOI: https://doi.org/10.4093/dmj.2012.36.2.90

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Diabetes affects today an estimated 366 million people world-wide, including 20 million to 40 million of patients with type 1 diabetes (T1D). While T1D accounts for 5% to 20% of those with diabetes, it is associated with higher morbidity, mortality and health care cost than the more prevalent type 2 diabetes. Patients with T1D require exogenous insulin for survival and should be identified as soon as possible after diagnosis to avoid high morbidity due to a delay in insulin treatment. It is also important to present to the patient correct prognosis that differs by the type of diabetes. From the research point of view, correct classification should help to identify the etiologies and to develop specific prevention for T1D. This review summarizes evidence that may be helpful in diagnosing T1D in various ethnic groups. Challenges in interpretation of results commonly used to determine the type of diabetes are highlighted.

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Original Articles

Evaluation of Fasting Plasma Glucose as a Screening for Diabetes Mellitus in Middle-aged Adults of Naju Country.: Jin Hwa Kim, Mi Ah Han, Chol Jin Park, Il Goo Park, Ji Hye Shin, Sang Yong Kim, So Yeon Ryu, Hak Yeon Bae; Korean Diabetes J. 2008;32(4):328-337. Published online August 1, 2008; DOI: https://doi.org/10.4093/kdj.2008.32.4.328

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Abstract PDF

BACKGROUND
The criteria for the diagnosis of diabetes mellitus have been modified by the American Diabetes Association (ADA) in 1997. The ADA proposed that the diagnosis of diabetes be defined by a fasting plasma glucose (FPG) of 7.0 mmol/L. Disagreement has been reported between criteria based on FPG and postchallenge 2-h plasma glucose (2-h PG). The aim of the present study is to assess the FPG criteria as the diagnostic screening test for diabetes in Korean middle-aged adults in comparison to the 2-h PG criteria. METHODS: Randomly selected 1,731 subjects (679 men and 1,052 women) aged 40~70 years (mean age: 58.4 +/- 7.89 years) without previously diagnosed diabetes completed 75 g oral glucose tolerance test (OGTT). We assessed the prevalence of diabetes mellitus and the level of agreement (kappa statistics) according to the different diagnostic glucose categories. RESULTS: The frequency of newly diagnosed diabetes was 2.7% (n = 51) using the FPG criteria only; 6.4% (n = 120) using the 2-h PG criteria only; and 6.9% (n = 130) using concentrations of > or = 7.0 mmol/L for FPG or > or = 11.1 mmol/L for 2-h PG. Of the 120 subjects with diabetes by the 2-h PG criteria, 65.8% (n = 79) were not diagnosed with diabetes according to FPG concentration. The level of agreement between two diagnostic criteria was low (kappa = 0.268). The receiver operating characterstic (ROC) curve analysis determined FPG of 5.6 mmol/L to yield optimal sensitivity and specificity corresponding to 2-h PG 11.1 mmol/L. CONCLUSION: The findings in this study demonstrate that the discordance between the FPG and 2-h PG criteria in the diagnosis of diabetes in Korean middle-aged adults is large. We suggest that IFG group (FPG 5.6~6.9 mmol/L) were performed 75 g OGTT for diagnosing diabetes mellitus in Korean middle-aged adults.

Citations

Citations to this article as recorded by

The Distribution and Characteristics of Abnormal Findings Regarding Fasting Plasma Glucose and HbA1c - Based on Adults Except for Known Diabetes
Seyoung Kwon, Youngak Na
The Korean Journal of Clinical Laboratory Science.2017; 49(3): 239. CrossRef
Gender differences in metabolic syndrome components among the Korean 66-year-old population with metabolic syndrome
Sangjin Lee, Young Ko, Chanyeong Kwak, Eun-shil Yim
BMC Geriatrics.2016;[Epub] CrossRef
2011 Clinical Practice Guidelines for Type 2 Diabetes in Korea
Seung-Hyun Ko, Sung-Rea Kim, Dong-Joon Kim, Seung-Joon Oh, Hye-Jin Lee, Kang-Hee Shim, Mi-Hye Woo, Jun-Young Kim, Nan-Hee Kim, Jae-Taik Kim, Chong Hwa Kim, Hae Jin Kim, In-Kyung Jeong, Eun-Kyung Hong, Jae-Hyoung Cho, Ji-Oh Mok, Kun-Ho Yoon
Diabetes & Metabolism Journal.2011; 35(5): 431. CrossRef
Associated Factors of Impaired Fasting Glucose in Some Korean Rural Adults
Hye Eun Yun, Mi-ah Han, Ki Soon Kim, Jong Park, Myeng Guen Kang, So Yeon Ryu
Journal of Preventive Medicine and Public Health.2010; 43(4): 309. CrossRef
Comparing Survival Functions with Doubly Interval-Censored Data: An Application to Diabetes Surveyed by Korean Cancer Prevention Study
Sun-Ha Jee, Chung-Mo Nam, Jin-Heum Kim
Korean Journal of Applied Statistics.2009; 22(3): 595. CrossRef

Pregnancy Outcome in Korean Women with Gestational Diabetes Mellitus Diagnosed by the Carpenter-Coustan Criteria.: Hak Chul Jang, Young Min Cho, Kyong Soo Park, Seong Yeon Kim, Hong Kyu Lee, Moon Young Kim, Jae Hyug Yang, Son Moon Shin; Korean Diabetes J. 2004;28(2):122-130. Published online April 1, 2004

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Abstract PDF: BACKGROUND
The American Diabetes Association recently proposed the Carpenter-Coustan criteria for the diagnosis of gestational diabetes mellitus(GDM) based on the results of the Toronto Tri-Hospital Study. The prevalence of GDM in Korean women increased, on average, by 60% when the Carpenter-Coustan criteria were applied. However, the pregnancy outcome of Korean women with GDM with regard to the Carpenter-Coustan criteria tremains to be reported. The pregnancy outcomes of those Korean women with GDM by the Carpenter- Coustan criteria, but not by the NDDG criteria were assessed. METHODS: In this study, a total of 2776 pregnant women underwent universal screening for GDM, between January 1993 and December 1994, as recommended by the Third International Workshop-Conference on Gestational Diabetes Mellitus with minor modifications. The primary pregnancy outcomes were preeclampsia, premature delivery, delivery by C-section, birth weight and LGA infants. RESULTS: Of the 2776 women, 656 screened-positive for GDM. Of these, 37 and 74 had GDM by the Carpenter-Coustan and NDDG criteria, respectively. With increasing glucose intolerance, there was a stepwise increase in premature deliveries, deliveries by C-section and preeclampsia from those screening negative to GDM by the NDDG criteria, with a similar trend for the frequency of LGA infants. The LGA infant screening-negative and positive were 13.5 and 16.1%, but those with a normal glucose tolerance were 27.0 and 33.8% in those screening positive to GDM by the Carpenter-Coustan and NDDG criteria, respectively(P<0.001). CONCLUSION: Our study demonstrated that increasing glucose tolerance was associated with increasing frequencies of adverse pregnancy outcomes in Korean women. The maternally complicated and LGA infants were significantly higher in women with GDM by the Carpenter-Coustan criteria. Thus the Carpenter- Coustan criteria are recommended for the diagnosis of GDM in Korean Women.

The Appropriteness of New ADA Diagnostin Criteria for Diabetes Mellitus in Korean Population.: Moon kyu Lee, Myung Shik Lee, Young Ki Min, Sung Hoon Kim, Byoung Joon Kim, Dong Jun Kim, Jong Ryeal Hahm, Eun Young Oh, Yun Jae Chung, Kyoung Ah Kim, Jae Hoon Chung, Kwang Won Kim; Korean Diabetes J. 1999;23(3):336-351. Published online January 1, 2001

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Abstract PDF: BACKGROUND
The ADA has proposed a new diagnostic criteria for diabetes based on fasting plasma glucose, redefining diabetes as fasting plasma glucose 7.0 mmol/L. Since only a few studies for the appropriateness of tbis new ADA criteria were undertaken in the Korean population, we examined the appropriateness of the new ADA criteria by analyzing the results of oral glucose tolerance tests done in our hospital. METHODS: 507 oral glucose tolerance tests were conducted. Cases with diabetes and diseases that could affect the glucose tolerance were excluded. Plasma glucose was measured by the hexokinase method. Three groups of NGT, IGT, and DM by the WHO criteria of 2 hour-plasma glucose were redivided at each level of fasting plasma glucose. We calculated the sensitivity and specificity of each level of fasting plasma glucose (FPG), and the FPG value of maximum accuracy to diagnose diabetes with reference to the WHO criteria of 2 hour-plasma glucose. RESULTS: Correlation between the levels of fasting plasma glucose and 2 hour-plasma glucose was relatively low (r=0.676). FPG of 7.0 mmol/L for diagnosing diabetes was relatively specific (specificity=0.934), but not sensitive (sensitivity= 0.552). FPG value of maximum accuracy for diagnosing diabetes was 6.8 mmol/L. 39 % of IFG (> 6.1mmol/L and < 7.0mmol/L) was reclassified as diabetes by the criteria of 2 hour plasma glucose 11.1 mmol/L and 34 % of NFG (<6.1mmol/L) was reclassified as impaired glucose tolerance by the criteria of 2 hour plasma glucose > 7.8 mmol/L. CONCLUSION: The fasting plasma glucose of 7.0 mmol/L was relatively specific for diagnosing diabetes. However, the new ADA criteria tended to underestimate the prevalence of diabetes and impaired glucose tolerance in the Korean population. Therefore, oral glucose tolerance test may be needed to diagnose diabetes in high risk subjects. Large-scale cross-sectional and prospective studies will be needed to clarify these points.

Evaluation of Fasting Plasma Glucose to Diagnose Diabetes in Yonchon County.: Young Joo Park, In Kyoung Chung, Chan Soo Shin, Kyong Soo Park, Seong Yeon Kim, Hong Kyu Lee, Sun Ja Kwon; Korean Diabetes J. 1998;22(3):372-380. Published online January 1, 2001

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Abstract PDF: BACKGROUND
Recently, many studies were performed to evaluate the diagnostic value of fasting plasma glucose to diagnose diabetes, and the diagnostic criteria were revised by ADA in 1997 to avoid discrepancy between the fasting plasma glucose (FPG) and 2 hour post-load plasma glucose(2hPG) cutpoint values after 75g oral glucose loading and to alsc facilitate and encourage the use of test for diagnosing diabetes. This study was performed to assess the performance of different cutpoint of fasting plasma glucose in the diagnosis of diabetes and to compare the prevalence and incidence of diabetes using revised 1997 ADA FPG criterion with those using 1985 WHO criteria in Yonchon County of Korea. METHODS: Two thousand three hundred fifty-six subjects who participated in population based cross-sectional study in Yonchon County in 1993. We have also analysed the data from 1141 subjects who were non-diabetic in 1993 and participated in the follow-up survey in 1995. The relationship between FPG and 2hPG were determined using sensitivity, specificity and the prevalence of diabetes according to FPG and/or 2hPG values. We have determined the prevalence and the incidence of diabetes using the ADA criterion. RESULTS: Based on WHO criteria, a FPG of 6.1 mmol/L(110mg/dL) was determined to yield optimal sensitivity(83.6%) and specificity(82.4%), but it showed low positive predictive value(27.2%) and high prevalence(24.5%). The FPG cutpoint which showed same prevalence with the criterion ot the 2hPG >11.1mmol/L(87 in 2251) was 7.4mmol/L (133mg/dL, 87 in 2251), The crude prevalence of diabetes and impaired fasting glucose by ADA criterion were 9.6% and 14.9%, respectively, where as the crude prevalence of diabetes and IGT were 9.4% and 11.5% by WHO criteria. The crude incidence of diabetes was 5.1% as defined by ADA criterion and 34.4% of subjects who showed impaired fasting glucose in 1993 converted to diabetes in 1995, whereas the incidence was 2.5% by WHO criteria and 13% of IGT subjeets converted to diabetes in 2 years. Conclusions: The adequate cutpoint for FPG seems to lie between 6.1mmol/L and 7.4mmol/L. The 1997 ADA criterion of the FPG > 7.0mmol/L produced similar prevalence and higher incidence than those obtained from 1985 WHO criteria and the former seems to be better to detect the risk group who may progress to diabetes.

Prevalence of Diabetes Mellitus and Impaired Glucose Tolerance in Korean Adults Living in Jungup District, South Korea.: Young Il Kim, Chul Soo Choi, Sang Wook Kim, Jong Soo Lee, Hyeong Ho Kim, Moo Sung Lee, Sang Il Lee, Joong Yeoul Park, Sung Kwan Hong, Ki Up Lee; Korean Diabetes J. 1998;22(3):363-371. Published online January 1, 2001

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Abstract PDF: BACKGROUND
Similar to other countries that underwent industrialization in recent years, the prevalence of diabetes has increased dramatically in Far East Asian countries. While the prevalence of diabetes in South Korean adults was estimated to be less than 0.5% in 1960s, a recent study from Yonchon County showed a dramatic increase to 7.2%. This was the only study performed in population-based subjects. We studied the prevalence of diabetes and impaired glucose tolerance(IGT) among subjects living in Jungup clistrict, Chonlabuk-do, South Korea. METHODS: Among a total of 28,380 subjects aged over 40 years living in Jungup district a sample of 1,791 subjects living in six villages was selected using a random cluster sampling method. Among these subjects, 1,108 subjects(61.9%) completed 75g oral glucose tolerance test(OGTT). RESULTS: When the WHO criteria were used, the prevalence of diabetes and IGT were 7.1% and 8.5%, respectively, after correction for Segi's standard world population. Among the diabetic subjects, 62% of the patients did not know that they had diabetes previously. When the 1997 ADA criteria after OGTT were employed, the prevalence of diabetes and IGT/IFG(impaired fasting glucose) was 8.5% and 11.1%, respectively. The mean body mass index(BMI) of whole subjects was 22.9+2.7 for men and 24.3+3.2kg/m for women. Among subjects with normal glucose tolerance, IGT and diabetes, 31.5%, 42.3% and 50.0% of subjects were currently obese(BMI >25kg/m), respectively. The prevalence of both diabetes and IGT increased with inereasing waist-to-hip ratio(WHR) in men and women. On the other hand, the prevalence of diabetes and glucose intolerance increased with increasing BMI only in women but not in men. CONCLUSION: The prevalence of diabetes and IGT in the present study was quite similar to that in the previous Yonchon study. This prevalence of diabetes is higher than or similar to that reported in the Caucasian(~ 3% 8%), even though mean BMI of this community population(23.9 kg/m) is lower than that in the Caucasian (24.5~28.0 kg/m). It can be speculated that Far East Asian penple are more prone to develop diabetes for their degree of obesity.

Comparison of the New Diagnostic Criteria for Diabetes Mellitus Recommended by the Expert Committee of the American Diabetes Association with the Criteria by the NDDG or WHO in Koreans with Fasting Plasma Glucose between 110 and 139 mg / dL.: Yeo Joo Kim, Moon Suk Nam, Mi Rim Kim, Yong Seong Kim, Kwan Woo Lee, Hyeon Man Kim, Choon Hee Chung, Su Youn Nam, Bong Soo Cha, Kyung Rae Kim, Hyun Chul Lee, Sam Kweon, Yong Wook Cho, Kap Bum Huh; Korean Diabetes J. 1998;22(2):209-217. Published online January 1, 2001

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Abstract PDF: BACKGROUND
The current diagnostic criteria for diabetes mellitus announced by National Diabetes Data Group(NDDG) in 1979 were revised by Expert Committee of World Health Organization(WHO) in both 1980 and 1985. However, according to advancement in the knowledge of the etiology and pathogenesis of diabetes mellitus, the International Expert Committee working under the sponsorship of the American Diabetes Association(ADA) decided to adopt the resolution proposing that the criteria of fasting glucose level applied to diagnosis of diabetes mellitus should be lowered at the 57 ADA conference held in Boston, USA in June 1997(97 ADA). Hereupon, by comparing the diagnostic criteria of the former (NDDG/WHO) with the later, the authors have examined the usefulness of new diaignostic criteria, 97 ADA. METHOD: We collected the data from 13 university hospitals in Korea which contain the results of 75 gram oral glucose tolerance test(OGTT) for 532 Kareans between 110 and 139 mg/dL in fasting plasma glucose. We have then evaluated the results by classifying and comparing them in accordance with the criteria of NDDG/WHO and 97 ADA, respectively. RESULTS: 1. The number which tested for oral glucose tolerance was 532 and the majority of tests have been carried out between 110 and 119 mg/dL in fasting plasma glucose. 2. When we have classified the same results of OGTT by respective diagnostic criteria of NDDG/ WHO and 97 ADA, the NDDG/WHO have diagnosed 50.4%(268/532) of the total number of people as diabetes mellitus, while the '97 ADA has shown that only 33.1%(176/532) of it corresponded to the same diagnosis. On the other hand, the diagnosis rate of impaired fasting glucose(IFG) or impaired glucose tolerance(IGT) has shown 28.8~ 31.8%(NDDG/ WHO) and 66.9%(97 ADA), respectively. 3. Following the diagnostic criteria of the 97 ADA, we have separated the results into two groups which were above and below 126 mg/dL in fasting glucose. In addition, when we have again classified two groups by the criteria of the NDDG/WHO, the group above 126mg/dL in fasting glucose, which was all diagnosed as diabetes mellitus in 97 ADA has represented a ratio of 72.2%(127/176) in same diagnosis. However, within the group below 126mg/ dL, in fasting glucose being classitied as IFG in the 97 ADA, its diagnosis rate of diabetes mellitus has also shown 39.7%(141/356) applying to the criteria of the NDDG/WHO. CONCLUSION: The criteria of the 97 ADA can simply make a diagnosis of diabetes mellitus with fasting plasma glucose and additionally fmd out the IFG whose rate is 17.9 20% regarded as a normal condition by NDDG/WHO, whereas the existing criteria of the NDDG/WHO have to carry out the OGTT which is difficult in clinics. However, since among the patients ot 50.4% diagnosed as diabetes mellitus by NDDG/WHO, the 97 ADA classifies 17.3% of them as IFG, it is regarded that the need of OGTT for the diagnosis of diabetes mellitus can not be passed over in the future.

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