BMJ  2004;329 (28 August), doi:10.1136/bmj.329.7464.0

Environmental factors linked to asthma prevalence disparity

Lifestyle and dietary factors may explain variations in the prevalence of asthma. Surveying over 10 000 Chinese children in Hong Kong, Beijing, and Guangzhou, Wong and colleagues (p 486) found that those living in Hong Kong were more likely to have asthma than those living in other regions (odds ratio 1.64; 95% confidence interval 1.35 to 1.99). Use of gas for cooking, foam pillows, and house dampness increased the likelihood of asthma, but eating fruits and raw vegetables and using cotton bedding protected against it.

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Factors associated with difference in prevalence of asthma in children from three cities in China: multicentre epidemiological survey

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BMJ 2004 329: 486. [Abstract] [Full Text] [PDF]