Residential density and adolescent overweight in a rapidly urbanising region of mainland China

Xu, Fei, JieQuan, Li, Liang, YaQiong, Wang, ZhiYong, Hong, Xin, Ware, Robert S., Leslie, Eva, Sugiyama, Takemi and Owen, Neville 2009, Residential density and adolescent overweight in a rapidly urbanising region of mainland China, Journal of epidemiology and community health, vol. 64, no. 11, pp. 1017-1021, doi: 10.1136/jech.2009.094169.

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Title Residential density and adolescent overweight in a rapidly urbanising region of mainland China
Author(s) Xu, Fei
JieQuan, Li
Liang, YaQiong
Wang, ZhiYong
Hong, Xin
Ware, Robert S.
Leslie, Eva
Sugiyama, Takemi
Owen, Neville
Journal name Journal of epidemiology and community health
Volume number 64
Issue number 11
Start page 1017
End page 1021
Total pages 14
Publisher B M J Group
Place of publication London, England
Publication date 2009-10-26
ISSN 0143-005X
Keyword(s) residential density
Summary Objective This study investigated the association of residential density with overweight among adolescents in an urban area of China.

Methods Using multistage proportional sampling methods, a population-based cross-sectional study was conducted in Nanjing between September and November 2004 (n=2375; mean age=13.9+/-1.0 years old; 46.2% boys; survey response rate=89.3%). Body mass index was calculated from self-reported body weight and height. Overweight, the main outcome variable, was defined as a BMI >/=85 percentile value for age- and gender-specific reference data according to the recommendation for Chinese adolescents. The primary explanatory variable was the residential density of the urban districts. Mixed-effects logistic regression models were used for the analysis.

Results Students in the higher and middle tertiles of residential density had a 2.17-fold (95% CI 1.41 to 3.33) and 1.89-fold (95% CI 1.22 to 2.92) higher likelihood of being overweight, respectively, compared with those in the lower tertile. The associations were slightly attenuated but still significant after adjusting for time spent in recreational physical activity and sedentary behaviour (viewing TV and sitting for academic study).

Conclusions Residential density was positively associated with overweight among urban Chinese adolescents. Our findings warrant further research examining attributes of urban environments associated with adolescents' obesity in China and potential mechanisms between them.
Language eng
DOI 10.1136/jech.2009.094169
Field of Research 111799 Public Health and Health Services not elsewhere classified
Socio Economic Objective 920499 Public Health (excl. Specific Population Health) not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2009, The Authors
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Document type: Journal Article
Collection: School of Psychology
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