A comparison of two proposed definitions for metabolic syndrome in the Chinese adult population

BACKGROUND: The metabolic syndrome is a major risk factor for cardiovascular disease (CVD). We estimated the prevalence of the metabolic syndrome using the definitions proposed by the International Diabetes Federation (IDF) and the American Heart Association and the National Heart, Lung, and Blood Institute (revised ATP III), and compared the 2 definitions in the Chinese adult population. METHODS: We conducted a cross-sectional study among a nationally representative sample of 15,838 Chinese adults ages 35 to 74 years in 2000 to 2001. Waist girth, blood pressure, and blood levels of HDL-cholesterol, triglycerides, and glucose were measured according to standard methods. RESULTS: The overall age-standardized prevalence of the metabolic syndrome by the IDF and revised-ATP III definitions was 16.5% and 23.3%, respectively. The overall agreement of being classified as having or not having the metabolic syndrome was 93.2% for the 2 definitions, with a Kappa coefficient of 0.80. The prevalence significantly increased with age and was higher in women than in men by both definitions (23.3% vs 10.0% for IDF and 29.1% vs 17.7% for revised ATP III). Compared with men, women had a significantly higher prevalence of central obesity (37.6% vs 16.0%) and reduced HDL-cholesterol (46.5% vs 21.9%), whereas men had a significantly higher prevalence of raised blood pressure (44.2% vs 38.0%) compared with women. CONCLUSIONS: The metabolic syndrome is very common in China regardless of the definition used. Prevention and treatment of the metabolic syndrome should become a public health priority to reduce the CVD-related burden in China.     

Prevalence of diabetes,metabolic syndrome,and cardiovascular risk factors in US Asian Indians: results from a national study

BackgroundAlthough studies of immigrant Asian Indians in other countries show high rates of diabetes (DM), metabolic syndrome (MetS), and cardiovascular disease (CVD), no randomized, population-based studies of this rapidly growing ethnic group exist in the US.MethodsThe sample comprised 1038 randomly selected Asian Indian immigrants, aged 18 years and older at seven US sites. Prevalence of diabetes and MetS (age-adjusted and sex-adjusted means) was estimated and ANOVA was used to calculate gender and group differences (normoglycemia/impaired fasting glucose/diabetes) for CVD risk factors.ResultsThe mean age was 48.2 years. The majority of respondents were male, married, educated, and with some form of health insurance. Prevalence of diabetes was 17.4%, and 33% of the respondents had prediabetes. Cardiovascular risk factors, especially high levels of triglycerides, total cholesterol, LDL cholesterol, homocysteine, and C-reactive protein, and low levels of HDL cholesterol, were also prevalent; elevated lipoprotein(a) was not observed. The age-adjusted prevalence of MetS was 26.9% by the original NCEP/ATP III criteria, 32.7% by the modified NCEP/ATP III criteria, and 38.2% by the IDF criteria. The MetS rates for women, but not for men, increased with age using all three criteria. There was a progressive worsening of all metabolic parameters as individuals progressed from normal to IFG to diabetes.ConclusionThe prevalence rates of diabetes and MetS among US Asian Indians are higher than reported in earlier, nonrandomized, smaller surveys. These data provide a firm basis for future mechanistic and interventional studies.     

Prevalence of the metabolic syndrome in the middle-aged and older Chinese population

Prevalence of the metabolic syndrome (MetS) is rapidly increasing in developing countries. The aim of the study was to provide the latest nationwide estimate on the prevalence of MetS in china. Using a complex, multistage, probability sampling design, a cross-sectional study was performed in a nationally representative sample of 17,708 adults aged 45 years and older from 28 provinces in 2011–2012. MetS was defined by the “Harmonizing the Metabolic Syndrome (HMS),” the guidelines from the National Cholesterol Education Program Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults (modified ATP III) and the International Diabetes Federation (IDF) definition, respectively. Overall, the age-standardized prevalence of MetS defined by the modified ATP III criteria was 33.7 %, but the prevalence defined by the new HMS and IDF definition significantly increased to 43.4 and 36.2 %, respectively. And prevalence of central obesity was considerably higher (52.1 vs. 24.0 %) with the HMS (or IDF) criteria than with the modified ATP III criteria. The age-standardized prevalence of high blood pressure, hyperglycemia, hypertriglyceridemia, and low HDL cholesterol was 54.1, 57.7, 27.6, and 43.1 %, respectively. Prevalence of the metabolic syndrome was rapidly increasing in the middle-aged and older Chinese population. We may bear a higher MetS-related burden and underscore the need for strategies aimed at the prevention, detection, and treatment of MetS and special attention should be paid to elderly women population.     

Comparison of the prevalence of metabolic syndrome and its association with diabetes and cardiovascular disease in the rural population of Bangladesh using the modified National Cholesterol Education Program Expert Panel Adult Treatment Panel III and International Diabetes Federation definitions

Aims/Introduction

To compare the prevalence of metabolic syndrome (MS) using the modified National Cholesterol Education Program Adult Treatment Plan III (NCEP) and the International Diabetes Federation (IDF) definitions and, using both definitions, determine and compare the association of MS, prediabetes, type 2 diabetes, hypertension (HTN) and cardiovascular disease risk (CVD).

Materials and Methods

A total of 2,293 randomly selected participants (aged ≥20 years) in a rural community in Bangladesh were investigated in a population-based cross-sectional study. Sociodemographic and anthropometric characteristics, blood pressure, blood glucose, and lipid profiles were studied. Age-adjusted data for MS and cardiometabolic risk factors were assessed, and their relationships were examined.

Results

The age-adjusted prevalence of MS was 30.7% (males 30.5%; females 30.5%) using the NCEP definition, and 24.5% (males 19.2%, females 27.5%) using the IDF definition. The prevalence of MS using the NCEP definition was also higher in study participants with prediabetes, type 2 diabetes, HTN and CVD risk. The agreement rate between both definitions was 92% (k = 0.80). The NCEP definition had a stronger association with type 2 diabetes and HTN (odds ratio 12.4 vs 5.2; odds ratio 7.0 vs 4.7, respectively) than the IDF definition. However, the odds ratios for prediabetes and CVD risk were not significantly different.

Conclusions

The prevalence of MS was higher using the NCEP definition, and was more strongly associated with prediabetes, type 2 diabetes, HTN and CVD in this Bangladeshi population.     

The implications of anthropometric, inflammatory and glycaemic control indices in the epidemiology of the metabolic syndrome given by different definitions: a classification analysis

BACKGROUND: Individuals with the metabolic syndrome (MS) are at high risk for coronary heart disease. In this study, we evaluated the levels of inflammatory, lipidaemic and glycaemic control markers in subjects with and without MS, as given by different definitions. METHODS: During 2001-2002, we randomly enrolled 1,514 men (18-87 years old) and 1,528 women (18-89 years old), without any clinical evidence of cardiovascular disease, from the Attica area, Greece. Among several variables, we also measured inflammatory markers, total antioxidant capacity, glucose and insulin levels and various lipids. MS was defined according to either the National Cholesterol Education Program Adult Treatment Panel (NCEP ATP) III criteria or the International Diabetes Federation (IDF) Epidemiology Task Force group. In all the analyses, subjects with diabetes were excluded. RESULTS: The prevalence of the MS was 17.9% according to the NCEP definition and 48.9% according to the IDF definition (p < 0.001). The prevalence of MS was higher in men compared with women according to both definitions (p for gender differences <0.001). Moreover, 3.9% of the total study sample fulfilled only the NCEP criteria, but not the IDF, while 38.6% fulfilled only the IDF criteria. Subjects who were defined as having MS using the IDF criteria were younger, had higher body mass index, C-reactive protein, fibrinogen, tumour necrosis factor-alpha levels, total antioxidant capacity and lower glucose and insulin levels. CONCLUSIONS: Prevalence of the MS is very high among Greek adults when the IDF definition is used, while it is still considerable when we adopt the NCEP criteria. It is evident that subjects who fulfilled the IDF criteria showed increased levels of inflammatory markers compared with those who fulfilled the NCEP ATP III criteria.     

Prevalence of metabolic syndrome in adults with excess of adiposity: comparison of the Adult Treatment Panel III criteria with the International Diabetes Federation definition

Abstract The aim was to compare the Adult Treatment Panel (ATP) III criteria with the International Diabetes Federation (IDF) definition of metabolic syndrome (MS) in adults with excess adiposity who were considered a high-risk population. A cross-sectional study was carried out in 274 adults with excess adiposity. MS was assessed in all volunteers considering the ATP III criteria and the new IDF definition. Among all individuals, 130 (47%) were similarly classified under the two definitions. Under the ATP III criteria, but not the IDF definition, 2 (1%) participants had MS, and 29 (11%) subjects had MS under the IDF definition but not the ATP III criteria (p=0.009). The ATP III criteria and the IDF definition were useful for identifying MS in adults with excess of adiposity; however, the IDF proposal identified a greater percentage of patients.     

不同诊断标准下北京市成人代谢综合征患病率

目的了解不同诊断标准下北京市成人代谢综合征（MS）流行状况,比较不同诊断标准MS的患病率并进行一致性检验。方法采用分层整群随机抽样方法对16711名年龄18岁以上北京市常住居民进行问卷调查、体格检查和实验室检查。利用中华医学会糖尿病学分会诊断标准（CDS）、国际糖尿病联盟诊断标准（IDF）、美国国家胆固醇项目专家组诊断标准（ATPⅢ）分别计算MS的患病率,并将结果进行比较和一致性检验。结果根据CDS、IDF、ATPⅢ三种诊断标准,北京市成人MS标化患病率分别为12．7％、24．0o,4和15．3％。无论以何种诊断标准,MS患病率均呈现随年龄增加而逐步增加的趋势（P=0．000）。通过对分别用CDS、IDF、ATPⅢ诊断的患者进行比较分析,分别有83．0％和89．9％患者相一致。Kappa检验显示三种指标的符合率较高,Kappa系数分别为0．510（CDS和IDF）和0．634（CDS和ATPⅢ）。结论北京市代谢综合征患病率高于国内平均水平。三种代谢综合征诊断标准均可用于中国人群,但是其适用性及价值的评价需在前瞻及随访研究中进一步证实。     

AComparison of the Prevalence of Metabolic Syndrome in Saudi Adult Females Using Two Definitions

The aim of this study was to estimate the prevalence of metabolic syndrome in Saudi adult women aged 18 years and above using the criteria of International Diabetes Federation (IDF) and modified National Cholesterol Education Program Adult Treatment Panel III (mNCEPATPIII). A cross-sectional survey was performed involving a group of 2577 non-pregnant Saudi women subjects aged 18-59 years residing in a military city in northern Saudi Arabia recruited from a primary care setting. Anthropometric data, together with a brief medical history, were obtained at initial contact, and laboratory investigations were performed on the following day after fasting for 12 h. Data on all variables required to define the metabolic syndrome according to IDF and mNCEP-ATPIII criteria were available for only 1922 subjects who attended the laboratory for investigations (response rate of 74.6%). Non-respondents were excluded from data analysis. Prevalence rates were estimated according to both definitions. Age-adjusted prevalence of metabolic syndrome was found to be 16.1% and 13.6% by IDF and mNCEP-ATPIII definitions, respectively. Abdominal obesity was the most common component in the study population (44.1% by mNCEP-ATPIII and 67.9% by IDF cut-off points). It was followed by low serum high-density lipoprotein cholesterol (36.0%). About two-thirds of the subjects (66.4% by mNCEP-ATPIII and 67.9% by IDF definitions) exhibited at least one criterion for metabolic syndrome by both definitions. Mean values and prevalence of individual components of the syndrome showed a steady rise with increase in age, general and abdominal obesity, and the presence of diabetes. Since the cut-off values for waist circumference by IDF definition were lower, prevalence rates by this definition were higher than those defined by mNCEP-ATPIII. High prevalence rates in this young sample predict a sharp rise in the prevalence rates of this syndrome among Saudi women over the next few years.     

The metabolic syndrome as a predictor of incident diabetes and cardiovascular events in the Health 2000 Study

AimThe study aimed to examine the role of the metabolic syndrome (MetS) as a predictor of incident cardiovascular disease (CVD) events and incident diabetes, and to compare the various definitions of MetS.MethodsThe population-based Health 2000 Study included 6105 individuals, aged 30–79 years, followed-up for 7 years. CVD during follow-up was defined as coronary death, acute myocardial infarction, coronary revascularization or stroke. MetS was defined according to the International Diabetes Federation (IDF), the 2005 National Cholesterol Education Program–Adult Treatment Panel III (ATP III), the World Health Organization (WHO) and the new Harmonization definitions. The Bayesian information criterion (BIC) was used to compare different Cox proportional-hazards regression models.ResultsThe highest prevalence estimates of MetS at baseline were observed with the Harmonization definition: 47.8% in men and 40.7% in women. During the follow-up, 238 cases of incident CVD and 172 cases of incident diabetes were observed. All definitions of MetS were significant predictors for incident CVD and diabetes. BIC suggested that the new Harmonization definition of MetS as one entity was a better predictor of the CVD endpoint than the sum of its components, but not for diabetes. Also, the Harmonization definition of MetS was a better predictor of CVD than the Framingham equation in women, but not in men.ConclusionIrrespective of definition, MetS is a significant predictor of incident CVD events and incident diabetes. Also, the new Harmonization definition may be a better predictor of incident CVD than the sum of its components.     

Prevalence of metabolic syndrome in Iranian adult population, concordance between the IDF with the ATPIII and the WHO definitions

BACKGROUND: Different criteria have been proposed by the WHO, the ATPIII and the International Diabetes Federation (IDF) for the diagnosis of the metabolic syndrome (MES). The objective of this study was to estimate the prevalence of this syndrome using the IDF definition among Iranian adults and to compare it with the prevalence estimated using the two other definitions. MATERIALS AND METHODS: The prevalence of the MES was determined according to the three different proposals in 10,368 men and women aged >/=20 years participated in the cross-sectional phase of the Tehran Lipid and Glucose Study. To assess the degree of agreement between different MES definitions, the k test was used. RESULTS: The prevalence of MES (95% confidence interval) was 32.1% (31.2-33.0) by the IDF definition, 33.2% (32.3-34.1) by the ATPIII and 18.4% (17.6-19.2) according to the WHO definition. The sensitivity, specificity of the IDF definition for detecting MES were 91%, 89% for the ATPIII and 73%, 77% for the WHO definition, respectively. The k statistics for the agreement of the IDF definition was 66.3+/-0.01 with the ATPIII and 39.5+/-0.01 with the WHO definition. CONCLUSION: In the Iranian population, the IDF definition for MES has a good concordance with the ATP III definition and a low concordance with the WHO definition.     

Prevalence and clinical correlates of metabolic syndrome in nigerians living with human immunodeficiency virus/acquired immunodeficiency syndrome

Abstract Background: Sub-Saharan Africa bears an inordinate burden of human immunodeficiency virus (HIV) infection/acquired immune deficiency syndrome (AIDS). Reports have shown increased prevalence of clustering of cardiovascular risk factors referred to as metabolic syndrome in treatment-na?ve patients and patients on highly active antiretroviral therapy (HAART). In view of the fact that metabolic syndrome is a heterogeneous disorder with substantial variability in the prevalence and component traits within and across populations and the dearth of publications on the prevalence and clinical correlates of metabolic syndrome in people living with HIV/AIDS (PLWHA) in Nigeria, this study was carried out to determine the prevalence and clinical correlates of metabolic syndrome among an HIV-infected outpatient population using the National Cholesterol Education Adult Treatment Panel III (NCEP ATP III), the International Diabetes Federation (IDF), and the Joint Interim Statement (JIS) definitions. We also sought to determine if HAART use and CD4 count level were associated with metabolic syndrome. Methods: This cross-sectional study involved 291 (95 men, 196 women) consecutive PLWHA. Anthropometry, blood pressure, fasting plasma glucose, and lipid profile values were determined. Results: The prevalence rates of metabolic syndrome according to the ATP III, IDF, and JIS criteria were 12.7%, 17.2%, and 21.0%, respectively. Metabolic syndrome was significantly associated with female gender (all definitions), body mass index (all definitions), increasing age, and CD4 count (IDF definition). There was no significant association between metabolic syndrome and HAART. The concordance [kappa coefficient (κ)] between the definitions of metabolic syndrome varied between 0.583 and 0.878. Conclusions: The prevalence of metabolic syndrome varied with the criteria used and metabolic syndrome correlates with traditional cardiovascular risk factors rather than HAART-related factors.     

不同诊断标准下黑龙江省成人代谢综合征患病率调查

目的 了解不同诊断标准下黑龙江省成人代谢综合征(MS)的患病率,并比较其一致性.方法 采取多级分层整群随机抽样的原则,对黑龙江2875名20～74岁的居民进行流行病学调查.采用美国胆固醇教育计划成人治疗组第三次指南(NCEP-ATPⅢ)诊断标准、国际糖尿病联盟(IDF)诊断标准及中华医学会糖尿病学分会(CDS)诊断标准计算MS的患病率,并进行结果比较和一致性检验.结果 根据ATP Ⅲ、IDF、CDS这3种诊断标准,黑龙江省成人MS标化患病率分别为14.47%、21.92%和18.73%.ATP Ⅲ与CDS诊断标准判断MS患病率的一致性最好,符合率为87.58%;其次为ATP Ⅲ与IDF,符合率为84.97%;而CDS与IDF的符合率为82.50%.结论 黑龙江地区成人MS患病率已经达到较高水平,3种MS诊断标准存在较好的一致性.     

Diagnostic criteria for metabolic syndrome: a comparative analysis in an unselected sample of adult male population

This analysis compares the performance of 7 different diagnostic criteria of metabolic syndrome (MS) with regard to the prevalence of the syndrome, the characteristics of subjects with a positive diagnosis, and the ability to correctly identify individuals at high calculated cardiovascular (CV) risk or with signs of systemic inflammation or early organ damage. The diagnostic criteria proposed by the World Health Organization (1998); European Group for the Study of Insulin Resistance (EGIR) (1999); Adult Treatment Panel III (ATP III) (2001); American Association of Clinical Endocrinologists (AACE) (2003); ATP III (2004); International Diabetes Federation (IDF) (2005); and American Heart Association/National Heart, Lung, and Blood Institute (2005) were applied to the population of 933 men aged 59.5 years (range, 33-81 years) attending the 2002-2004 examination of the Olivetti Heart Study. Standardized measurements were available for body mass index, waist circumference, blood pressure, fasting serum total and high-density lipoprotein cholesterol, triglyceride, glucose, insulin, high-sensitivity C-reactive protein, and microalbuminuria. Insulin resistance was estimated by the homeostasis model assessment index; and CV risk, by the Prospective Cardiovascular Munster algorithm. The MS prevalence ranged from 8.6% (AACE) to 44.5% (IDF). Among MS-positive subjects, insulin resistance ranged from 94.8% (EGIR) to 49.2% (IDF), whereas type 2 diabetes mellitus (excluded by EGIR and AACE criteria) rated 59.9% by World Health Organization and 22% to 24% by ATP III, IDF, or American Heart Association/National Heart, Lung, and Blood Institute. By most criteria, MS-positive subjects had greater calculated CV risk than MS-negative subjects; but in general, the ability to correctly identify individuals at high CV risk was dampened by limited sensitivity (maximum 60%). Lowering the cutoff for abdominal adiposity (waist circumference <94 cm by IDF) did not improve the performance in this regard but identified a larger number of individuals with microalbuminuria (56%) and elevated C-reactive protein (53%).     

Performance of Two Metabolic Syndrome Definitions in the Estimation of Cardiovascular Disease Among Hypertensive Patients

J Clin Hypertens(Greenwich). 2010;12:588–596. © 2010 Wiley Periodicals, Inc. The authors evaluated the significance of metabolic syndrome (MetS) diagnosis, as defined by the National Cholesterol Education Program (NCEP) and by the International Diabetes Federation (IDF), in the evaluation of cardiovascular risk in hypertensive patients. Among 638 patients, the prevalence of MetS was 54.7% when the IDF criteria were used, compared with 45.5% when the NCEP criteria were used. MetS correlated significantly with the presence of cardiovascular disease (CVD). In patients without type 2 diabetes mellitus (T2DM), only MetS diagnosed using the IDF criteria was associated with the presence of CVD. In those with T2DM, MetS was not associated with CVD, regardless of the criteria used. The diagnosis of MetS, using either set of criteria, was associated with the development of T2DM. We conclude that, in hypertensive patients without diabetes, a diagnosis of MetS according to IDF criteria, but not the NCEP criteria, is useful in identifying individuals with a higher probability of incident CVD. In patients with diabetes, a population already considered at high risk for CVD, a diagnosis of MetS, regardless of the criteria used, has no further impact on prognosis.     

The metabolic syndrome and incidence of cardiovascular disease in non-diabetic subjects--a population-based study comparing three different definitions.

Aims Between 1998 and 2005, a number of definitions of the metabolic syndrome (MetS) have been proposed. The aim of this population‐based cohort study was to compare prevalence rates and the prediction of cardiovascular disease (CVD) using different definitions of MetS. Methods A total of 5047 non‐diabetic subjects (66% women), from the city of Malmö, Sweden, were followed. The incidence of fatal and non‐fatal CVD (cardiac events, n = 176, and stroke, n = 171) was monitored over 11 years of follow‐up. MetS was defined in three different ways [by International Diabetes Federation (IDF), National Cholesterol Education Program—Adult Treatment Panel III (NCEP‐ATPIII), or European Group for the study of Insulin Resistance (EGIR) criteria] based on data on waist circumference, blood pressure, serum triglycerides, High‐density lipoprotein cholesterol and fasting blood glucose. The IDF definition identified 21.9% of the subjects having the MetS. Corresponding figures for the NCEP‐ATPIII and EGIR definitions were 20.7 and 18.8%, respectively. Results After taking age, gender, low‐density lipoprotein cholesterol and lifestyle factors into account, the hazard ratio (HR) for CVD event according to the IDF, NCEP‐ATPIII and EGIR definitions were HR 1.11 (95% CI: 0.86–1.44), 1.59 (1.25–2.03) and 1.35 (1.05–1.74), respectively. The results were largely similar for cardiac and stroke events. Conclusions The prevalence of Mets according to the IDF definition was higher in comparison with NCEP‐ATPIII and EGIR definitions, but the IDF definition was not superior to these definitions for prediction of CVD events. This was true for both genders and questions the usefulness of the current IDF criteria of MetS in a North‐European, Caucasian population. In addition, single risk factors such as smoking had an equal prediction as the metabolic syndrome.     

Metabolic syndrome and its relation to chronic kidney disease in a Southeast Asian population

The metabolic syndrome has been documented to increase the risk of cardiovascular disease and chronic kidney disease (CKD); however, there are few studies of this in developing countries. A total of 15,357 participants of a standardized check-up, included metabolic screening, were enrolled. Metabolic syndrome was defined using criteria modified from the National Cholesterol Education Program Adult Treatment Panel III (NCEP-ATP III) and the International Diabetes Federation (IDF). CKD was defined as a glomerular filtration rate <60 m/min per 1.73 m2. Eighty point four percent of participants were men and 2,228 (14.5%) had CKD. Metabolic syndrome was more prevalent among CKD subjects than non-CKD subjects (modified NCEP-ATP III, 30.1% vs 24.4%; p < 0.001; modified IDF 26.9% vs 23.1%; p < 0.001, respectively). Abdominal obesity, high triglycerides, high blood pressure and impaired fasting glucose were significantly associated with an increased prevalence of CKD. There was also a significant graded relationship between the number of metabolic syndrome components and the prevalence of CKD. Participants with metabolic syndrome according to the modified NCEP-ATP III and modified IDF criteria had a 1.34-fold increase in adjusted odds ratio (95% CI 1.21-1.49) and a 1.20-fold increase in adjusted odds ratio (95% CI 1.08-1.33), respectively, compared to those without metabolic syndrome. Our study demonstrated metabolic syndrome defined with modified NCEP-ATP III and modified IDF criteria was significantly associated with increased prevalence of CKD in a Southeast Asian population.     

Defining the metabolic syndrome: Resolving unresolved issues?

BACKGROUND: Several definitions exist for the metabolic syndrome. In concert with the blood pressure and glucose criteria of the NCEP definition, it has now been suggested that the use of fibrates and nicotinic acid be incorporated into the dyslipidemia criteria. While statins are the drugs most widely prescribed for lowering LDL-cholesterol, they also affect triglyceride and HDL-cholesterol levels. The aims of the present study were (1) to investigate how adding lipid-lowering therapy to the NCEP definition might influence the prevalence of the metabolic syndrome and (2) to compare the characteristics of patients identified according to the newly proposed IDF definition with those identified according to the NCEP definition. METHODS: We conducted a cross-sectional study on 2373 patients with clinically manifest vascular disease. In order to allow for the influence of lipid-lowering therapy on the identification of patients with the metabolic syndrome, the NCEP definition was modified in two ways. In NCEP-rev1, the use of lipid-lowering agents fulfilled the hypertriglyceridemia criterion; in NCEP-rev2, triglycerides and HDL-cholesterol plasma concentrations were recalculated for lipid-lowering agents. RESULTS: The prevalence of the metabolic syndrome was 41% according to the NCEP definition, 50% according to the NCEP-rev1, 44% according to the NCEP-rev2, and 52% according to the IDF definition. Patients identified only with the NCEP definition had lower HDL-cholesterol, higher triglycerides, and higher fasting glucoses levels than patients only diagnosed with the IDF definition. CONCLUSION: Adding the use of lipid-lowering drugs to the NCEP definition may lead to the identification of an additional group of patients at an elevated risk for cardiovascular diseases and diabetes. The NCEP definition of the metabolic syndrome identifies patients with a worse cardiovascular risk profile than patients qualifying for the metabolic syndrome with the IDF definition in a cohort of patients with clinical manifestations of vascular disease.     

Evidence on the applicability of the ATPIII,IDF and CDS metabolic syndrome diagnostic criteria to identify CVD and T2DM in the Chinese population from a 6.3-year cohort study in mid-eastern China

AimsThis study evaluates the effectiveness of three metabolic syndrome (MS) criteria in identifying cardiovascular disease (CVD) and type 2 diabetes mellitus (T2DM) in the Chinese population.Methods3598 subjects were recruited from a cohort study on Prevention of Multiple Metabolic disorders and MS in Jiangsu of China (PMMJS), followed at 6.3 years. MS was diagnosed using criteria of the National Cholesterol Education Program's Adult Treatment Panel III (ATPIII), the International Diabetes Federation (IDF) and Chinese Diabetes Society (CDS). Cox regression model was used to analysis the association between MS and onset of CVD and T2DM. Receiver operating characteristic (ROC) curve, sensitivity and specificity were also used to test the ability of three MS criteria to identify CVD or T2DM.ResultsAmong three criteria, CDS has the highest specificity but lowest sensitivity. Using the CDS criterion, over 50 percent of patients would be misdiagnosed. ATPIII criterion has the shortest distance in ROC curve, lowest false positive rate and false negative rate for identifying CVD and T2DM. ATPIII+/IDF+ has lower ability to predict CVD than ATPIII+/IDF−. ATPIII+/IDF+ and ATPIII+/IDF− has similar ability to predict T2DM.ConclusionsThe ATPIII-MS criterion has the highest ability to predict CVD and T2DM. ATPIII is the best MS criterion for the Chinese population.     

Prevalence of Metabolic Syndrome by different definitions,and its association with type 2 diabetes,pre-diabetes,and cardiovascular disease risk in Brazil

Background and aimsMetabolic Syndrome (MS) is increasing in developing countries. Different definitions of MS lead to discrepancies in prevalence estimates and applicability. We assessed the prevalence of MS as defined by the International Diabetes Federation (IDF), modified National Cholesterol Education Program Adult Treatment Plan III (Modified NCEP) and Joint Interim Statement (JIS); compared the diagnostic performance and association of these definitions of MS with pre-diabetes, type 2 diabetes mellitus (T2DM) and cardiovascular disease (CVD) risk.MethodsA total of 714 randomly selected subjects from Northeastern Brazil were investigated in a cross-sectional study. Sociodemographic, anthropometric, and clinical data were recorded. Diagnostic test performance measures assessed the ability of the different MS definitions to identify those with pre-diabetes, T2DM and increased CVD risk.ResultsThe adjusted prevalence of MS was 36.1% applying the JIS criteria, 35.1% the IDF and 29.5% Modified NCEP. Women were more affected by MS according to all definitions. MS was significantly associated with pre-diabetes, T2DM and CVD risk following the three definitions. However, the JIS and IDF definitions showed higher sensitivity than the Modified NCEP to identify pre-diabetes, T2DM and CVD risk. The odds ratios for those conditions were not significantly different when comparing the definitions.ConclusionsMS is highly prevalent in Brazil, particularly among those with pre-diabetes, T2DM, and high CVD risk. The IDF and JIS criteria may be better suited in the Brazilian population to identify pre-diabetes, T2DM and CVD risk. This may also signify the importance of the assessment of MS in clinical practice.     

Prevalence of metabolic syndrome estimated by International Diabetes Federation criteria in a Hungarian population

Aims. In recent years, metabolic syndrome (MS) became a distinct pathological entity. MS is positively associated with cardiovascular mortality. The prevalence of MS is high and a continuing increase is expected. For this reason, all attempts to prevent or manage MS by interventions are extremely important. The new set of definition by International Diabetes Federation (IDF) standardizes criteria for the diagnosis of MS and facilitates its recognition. In a large sample (n = 13 383) of outpatients visiting their general practitioners, we determined the prevalence of risk factors of MS according to the earlier Adult Treatment Panel (ATP) III and the new IDF criteria. Methods and results. The age-standardized prevalence of MS was 14.9% in males and 8.6% in females (11.5% for all). The most prevalent factors were obesity (ATP III: 38.8% and IDF: 60%) and hypertriglyceridemia (34.1%). Hypertension dominated in men (28.7%), whereas in women obesity was the most prevalent factor (ATP III: 47.4% and IDF: 64%). Conclusion. The prevalence of MS depends on applied definition. The new IDF criteria offer the possibility of focusing on the importance of different components. The real comparison of prevalence among special populations has to be based on age-standardized data and the use of the same components. In our study, the dominance of obesity, hypertension and hypertriglyceridemia appears to be the major detrimental factors. The 11.5% general prevalence of MS in Hungarians, which means a 25-30% value in the middle-aged population, needs an urgent preventive approach with lifestyle changes.