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Risk factors for overweight and obesity, and changes in body mass index of Chinese adults in Shanghai.

Abstract

BACKGROUND

Over the past two decades, the prevalence of overweight or obesity has increased in China. The aims of this study were to firstly assess the baseline prevelences and the risk factors for overweight and obesity, and secondly to detect the changes of body mass index (BMI) over a follow-up period in Chinese adults in Shanghai.

METHODS

The data set of a population-based longitudinal study was analyzed. Anthropometric and biochemical data were collected for 5364 subjects (aged 25-95 years) during a period of 1998-2001. Among those individuals, 3032 subjects were interviewed and reexamined at the second survey from 2003 to 2004. Then the standardized prevalences for overweight and obesity were calculated using baseline data; the possible contributing factors of overweight and obesity were detected using binary logistic regression analysis; and the changes of BMI were evaluated after an average of 3.6-year follow-up period.

RESULTS

(1) According to the WHO standard and the Chinese standard, the sex- and age-standardized prevalences were 27.5% and 32.4% for overweight, and 3.7% and 9.1% for obesity, respectively. (2) The risks of overweight and obesity differed among different age groups. Family history of obesity increased the risk of overweight and obesity by about 1.2-fold for both genders. Current male smokers had a lower risk of overweight and obesity (OR = 0.76, p < 0.05) than nonsmokers. In contrast, current male drinkers had a higher risk of overweight and obesity (OR = 1.42, p < 0.05) than nondrinkers. Compared with low-educated women, medium- and high- educated women were at lower risk of overweight and obesity, and the corresponding ORs (95% CIs) were 0.64 (0.52-0.79) and 0.50(0.36-0.68), respectively. (3) The annual changes of BMI means ranged from an increase of 0.1 kg/m2 to a decrease of 0.2 kg/m2 (by genders and age groups). Meanwhile, the BMI increase was statistically significant in the 35-44 years age group, and the BMI decrease was significant above 65 years for both genders.

CONCLUSION

This study showed high prevalence of overweight and obesity in Shanghai metropolis populations. The risk factors of overweight and obesity were multifactorial and gender specific. After 3.6 years, BMI means changed slightly, BMI increased mainly in middle-aged individuals and decreased in old individuals.

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  • Authors+Show Affiliations

    ,

    Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Diabetes Institute, Shanghai Clinical Center of Diabetes, Shanghai 200233, PR China. houxuhongsjtu@yahoo.com

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    Source

    BMC public health 8: 2008 Nov 21 pg 389

    MeSH

    Adult
    Aged
    Aged, 80 and over
    Alcohol Drinking
    Body Mass Index
    China
    Educational Status
    Female
    Hospitals, Community
    Humans
    Income
    Male
    Middle Aged
    Obesity
    Overweight
    Population Surveillance
    Prevalence
    Prospective Studies
    Risk Assessment
    Risk Factors
    Risk-Taking
    Smoking
    Urban Health
    Young Adult

    Pub Type(s)

    Journal Article
    Research Support, Non-U.S. Gov't

    Language

    eng

    PubMed ID

    19025585

    Citation

    Hou, Xuhong, et al. "Risk Factors for Overweight and Obesity, and Changes in Body Mass Index of Chinese Adults in Shanghai." BMC Public Health, vol. 8, 2008, p. 389.
    Hou X, Jia W, Bao Y, et al. Risk factors for overweight and obesity, and changes in body mass index of Chinese adults in Shanghai. BMC Public Health. 2008;8:389.
    Hou, X., Jia, W., Bao, Y., Lu, H., Jiang, S., Zuo, Y., ... Xiang, K. (2008). Risk factors for overweight and obesity, and changes in body mass index of Chinese adults in Shanghai. BMC Public Health, 8, p. 389. doi:10.1186/1471-2458-8-389.
    Hou X, et al. Risk Factors for Overweight and Obesity, and Changes in Body Mass Index of Chinese Adults in Shanghai. BMC Public Health. 2008 Nov 21;8:389. PubMed PMID: 19025585.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Risk factors for overweight and obesity, and changes in body mass index of Chinese adults in Shanghai. AU - Hou,Xuhong, AU - Jia,Weiping, AU - Bao,Yuqian, AU - Lu,Huijuan, AU - Jiang,Shan, AU - Zuo,Yuhua, AU - Gu,Huilin, AU - Xiang,Kunsan, Y1 - 2008/11/21/ PY - 2008/02/21/received PY - 2008/11/21/accepted PY - 2008/11/26/pubmed PY - 2009/4/25/medline PY - 2008/11/26/entrez SP - 389 EP - 389 JF - BMC public health JO - BMC Public Health VL - 8 N2 - BACKGROUND: Over the past two decades, the prevalence of overweight or obesity has increased in China. The aims of this study were to firstly assess the baseline prevelences and the risk factors for overweight and obesity, and secondly to detect the changes of body mass index (BMI) over a follow-up period in Chinese adults in Shanghai. METHODS: The data set of a population-based longitudinal study was analyzed. Anthropometric and biochemical data were collected for 5364 subjects (aged 25-95 years) during a period of 1998-2001. Among those individuals, 3032 subjects were interviewed and reexamined at the second survey from 2003 to 2004. Then the standardized prevalences for overweight and obesity were calculated using baseline data; the possible contributing factors of overweight and obesity were detected using binary logistic regression analysis; and the changes of BMI were evaluated after an average of 3.6-year follow-up period. RESULTS: (1) According to the WHO standard and the Chinese standard, the sex- and age-standardized prevalences were 27.5% and 32.4% for overweight, and 3.7% and 9.1% for obesity, respectively. (2) The risks of overweight and obesity differed among different age groups. Family history of obesity increased the risk of overweight and obesity by about 1.2-fold for both genders. Current male smokers had a lower risk of overweight and obesity (OR = 0.76, p < 0.05) than nonsmokers. In contrast, current male drinkers had a higher risk of overweight and obesity (OR = 1.42, p < 0.05) than nondrinkers. Compared with low-educated women, medium- and high- educated women were at lower risk of overweight and obesity, and the corresponding ORs (95% CIs) were 0.64 (0.52-0.79) and 0.50(0.36-0.68), respectively. (3) The annual changes of BMI means ranged from an increase of 0.1 kg/m2 to a decrease of 0.2 kg/m2 (by genders and age groups). Meanwhile, the BMI increase was statistically significant in the 35-44 years age group, and the BMI decrease was significant above 65 years for both genders. CONCLUSION: This study showed high prevalence of overweight and obesity in Shanghai metropolis populations. The risk factors of overweight and obesity were multifactorial and gender specific. After 3.6 years, BMI means changed slightly, BMI increased mainly in middle-aged individuals and decreased in old individuals. SN - 1471-2458 UR - https://www.unboundmedicine.com/medline/citation/19025585/Risk_factors_for_overweight_and_obesity_and_changes_in_body_mass_index_of_Chinese_adults_in_Shanghai_ L2 - https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-8-389 DB - PRIME DP - Unbound Medicine ER -