Elsevier

Preventive Medicine

Volume 57, Issue 6, December 2013, Pages 867-871
Preventive Medicine

Prevalence of metabolic syndrome and its influencing factors among the Chinese adults: The China Health and Nutrition Survey in 2009

https://doi.org/10.1016/j.ypmed.2013.09.023Get rights and content

Highlights

  • MS is still highly prevalent among Chinese adults regardless the used criteria.

  • Individuals who were women, ≥ 40 years, obese, and living in urban area were more likely to have higher prevalence estimate of MS.

  • Frequency of alcohol consumption and cigarette intake were also found to be significantly associated with probability of MS.

  • National strategies should be developed to prevent, detect, treat and control MS in China.

Abstract

Objective

We aimed to estimate the up-to-date prevalence of metabolic syndrome (MS) and its influencing factors among the Chinese adults.

Methods

Data were obtained from the China Health and Nutrition Survey conducted in 2009, which was a cross-sectional and partially nationally representative study including a total of 7488 Chinese adults (age  18 years).

Results

The overall age-standardized prevalence estimates of the MS were 21.3% (95%confidence interval (CI): 20.4%–22.2%), 18.2% (95%CI: 17.3%–19.1%) and 10.5% (95%CI: 9.8%–11.2%) based on definitions of revised NCEP ATPIII, IDF and CDS criteria, respectively. Individuals who were women (compared to men: odds ratio [OR] = 1.37, 95% CI = 1.16–1.61), 40 years or older (compared to less than 40 years old: OR = 2.82, 95%CI = 2.37–3.34 for 40–59 years; OR = 4.41, 95%CI = 3.68–5.29 for 60 years or older), overweight/obese (compared to normal weight: OR = 4.32, 95%CI = 3.77–4.95 for overweight; OR = 11.24, 95%CI = 9.53–13.26 for obese), and living in urban area (compared to living in rural area: OR = 1.27, 95%CI = 1.12–1.43) were more likely to have a higher prevalence estimate of MS. In addition, frequency of alcohol consumption and cigarette intake were also found to be significantly associated with probability of MS.

Conclusions

Our results suggest an urgent need to develop national strategies for the prevention, detection, treatment and control of obesity and MS in China.

Introduction

Metabolic syndrome (MS) is becoming a major public health issue worldwide (Kassi et al., 2011). MS is characterized by a cluster of metabolic risk factors including central obesity, elevated blood pressure, dysglycemia, high triglyceride levels and low high-density lipoprotein cholesterol levels. Many evidences have suggested that MS is associated with increased risk of cardiovascular disease (CVD) (Scuteri et al., 2005), type 2 diabetes (T2D) (Wannamethee et al., 2005) and all cause-mortality (Ford, 2004). In the past few years, several expert groups have proposed several diagnostic criteria of MS including the World Health Organization criteria in 1998 (Alberti and Zimmet, 1998), the US Third Report of the National Cholesterol Education Program (NCEP) Expert Panel on Detection, Evaluation and Treatment of High Blood Cholesterol in Adults (Adult Treatment Panel III) (2002), and the International Diabetes Federation (IDF) criteria in 2005 (Alberti et al., 2006), as well as the AHA/NHLBI statement in 2005 (Grundy et al., 2005) and the joint interim statement (JIS) in 2009 (Alberti et al., 2009). These criteria generally share the similar components although they vary somewhat in some specific elements. For example, the components of the revised NCEP ATPIII and IDF criteria are the same but IDF requires central obesity as one obligatory component. The CDS used body mass index (BMI) rather than waist circumference (WC) as one index to define obesity and the cut-offs for other components are different from those in the revised NCEP ATPIII and IDF criteria except for the cut-off of triglycerides.

China is currently experiencing rapid economic, social and cultural changes, including accelerated pace of nutrition transition and markable changes in people's lifestyles that may contribute to greatly increased burden of chronic diseases. MS, as a cluster of cardio-metabolic risk factors, is related to chronic diseases. Understanding the MS prevalence in the national level is important to develop the effective programs and strategies to prevent and control MS. However, little is known about the recent prevalence of MS in China.

In this study, data from the China Health and Nutrition Surveys (CHNS) in 2009 (Popkin et al., 2010), a partially nationally representative cross-sectional health and nutrition survey in China, were used to describe the recent prevalence of MS by three definitions (revised NCEP ATPIII, IDF and Chinese Diabetes Society (CDS) criteria), and to examine MS related influencing factors.

Section snippets

Study design and subjects

The CHNS is a large-scale, partially nationally representative, and successive cross-sectional survey that was designed to explore how the health and nutritional status of the Chinese population has been affected by its social and economic changes. A multistage, random cluster process was used to draw study sample from nine provinces (Liaoning, Heilongjiang, Jiangsu, Shandong, Henan, Hubei, Hunan, Guangxi and Guizhou). The recruitment strategies of the participants have been described elsewhere

Characteristics of the study population

Table 2 shows the characteristics of the total study population (n = 7488) by sex. There was no significant difference in mean age and BMI, and distribution of general obesity, and low HDL-C using CDS criteria between two sex groups (All p > 0.05). However, significant difference was found for mean WC, SBP, DBP, TG, HDL-C and fasting plasma glucose, and distribution of central obesity, high BP, high TG and low HDL-C using NCEP ATPIII criteria (All p < 0.001, which were still statistically significant

Discussion

The present study provided the updated information on the prevalence of MS and its related influencing factors among Chinese adults based on the most recent, partially nationally representative data from the CHNS. The age-standardized prevalence of MS was very high, with 21.3%, 18.2% and 10.5% based on definitions of revised NCEP ATPIII, IDF and CDS criteria, respectively. High BP was the most frequent component in men and high WC was the most frequent component in women. MS was associated with

Contributions

Study concept and design: BX. Acquisition of data: DH and YH. Analysis and interpretation of data: BX and DZ. Drafting of the manuscript: BX. Critical revision of the manuscript for important intellectual content: BX, DH, YH, and DZ.

Acknowledgment

This study was supported by the NIH (R01-HD30880, DK056350 and R01-HD38700). We thank the National Institute of Nutrition and Food Safety, China Center for Disease Control and Prevention, Carolina Population Center, the University of North Carolina at Chapel Hill and the Fogarty International Center for the financial support for CHNS data collection and analysis files in 2009.

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