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Gender-specific association between tobacco smoking and central obesity among 0.5 million Chinese people: the China Kadoorie Biobank Study

PloS one, 2015-04, Vol.10 (4), p.e0124586-e0124586 [Peer Reviewed Journal]

COPYRIGHT 2015 Public Library of Science ;COPYRIGHT 2015 Public Library of Science ;2015 Lv et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;2015 Lv et al 2015 Lv et al ;ISSN: 1932-6203 ;EISSN: 1932-6203 ;DOI: 10.1371/journal.pone.0124586 ;PMID: 25897789

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Title:
Gender-specific association between tobacco smoking and central obesity among 0.5 million Chinese people: the China Kadoorie Biobank Study
Author: Lv, Jun ; Chen, Wei ; Sun, Dianjianyi ; Li, Shengxu ; Millwood, Iona Y ; Smith, Margaret ; Guo, Yu ; Bian, Zheng ; Yu, Canqing ; Zhou, Huiyan ; Tan, Yunlong ; Chen, Junshi ; Chen, Zhengming ; Li, Liming
Schooling, C. Mary
Subjects: Adult ; Adults ; Aged ; Alcohols ; Analysis ; Biological Specimen Banks ; Body mass ; Body Mass Index ; China - epidemiology ; Educational Status ; Epidemiology ; Exercise ; Female ; Females ; Gender ; Health risk assessment ; Health Surveys ; Humans ; Male ; Males ; Middle Aged ; Motor Activity ; Obesity ; Obesity, Abdominal - epidemiology ; Obesity, Abdominal - physiopathology ; Physical activity ; Population studies ; Prevalence ; Regression Analysis ; Regression coefficients ; Risk analysis ; Risk Factors ; Science ; Sex differences ; Sex Factors ; Smoking ; Smoking - epidemiology ; Smoking - physiopathology ; Surveys ; Tobacco ; Tobacco smoking ; Waist Circumference ; Waist-Height Ratio
Is Part Of: PloS one, 2015-04, Vol.10 (4), p.e0124586-e0124586
Description: Lifestyle factors are well-known important modifiable risk factors for obesity; the association between tobacco smoking and central obesity, however, is largely unknown in the Chinese population. This study examined the relationship between smoking and central obesity in 0.5 million Chinese adults, a population with a low prevalence of general obesity, but a high prevalence of central obesity. A total of 487,527 adults (200,564 males and 286,963 females), aged 30-79 years, were enrolled in the baseline survey of the China Kadoorie Biobank (CKB) Study conducted during 2004-2008. Waist circumference (WC) and WC/height ratio (WHtR) were used as measures of central obesity. The prevalence of regular smokers was significantly higher among males (60.6%) than among females (2.2%). The prevalence of central obesity increased with age and BMI levels, with a significant gender difference (females>males). Of note, almost all obese adults (99.4%) were centrally obese regardless of gender. In multivariable regression analyses, adjusting for age, education, physical activity, alcohol use and survey site, regular smoking was inversely associated with BMI in males (standardized regression coefficients, β= -0.093, p<0.001) and females (β= -0.025, p<0.001). Of interest, in the BMI stratification analyses in 18 groups, all βs of regular smoking for WHtR were positive in both genders; the βs showed a significantly greater increasing trend with increasing BMI in males than in females. In the analyses with model adjustment for BMI, the positive associations between regular smoking and WHtR were stronger in males (β= 0.021, p<0.001) than in females (β= 0.008, p<0.001) (p<0.001 for gender difference). WC showed considerably consistent results. The data indicate that tobacco smoking is an important risk factor for central obesity, but the association is gender-specific and depends on the adjustment for general obesity.
Publisher: United States: Public Library of Science
Language: English
Identifier: ISSN: 1932-6203
EISSN: 1932-6203
DOI: 10.1371/journal.pone.0124586
PMID: 25897789
Source: Public Library of Science (PLoS) Journals Open Access
Geneva Foundation Free Medical Journals at publisher websites
MEDLINE
PubMed Central
Directory of Open Access Journals
ProQuest Central

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Gender-specific association between tobacco smoking and central obesity among 0.5 million Chinese people: the China Kadoorie Biobank Study

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