CMAJ • November 18, 2008; 179 (11). doi:10.1503/cmaj.071797.
© 2008 Canadian Medical Association or its licensors
All editorial matter in CMAJ represents the opinions of the authors and not necessarily those of the Canadian Medical Association.
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Prevalence of asthma among Chinese adolescents living in Canada and in China

Hong-Yu Wang, MD PhD, Gary W.K. Wong, MD, Yu-Zhi Chen, MD, Alexander C. Ferguson, MB ChB, Justina M. Greene, Yu Ma, MD, Nan-Shan Zhong, MD, Christopher K.W. Lai, DM and Malcolm R. Sears, MB ChB

From the Guangzhou Institute of Respiratory Diseases (Wang, Zhong), First Affiliated Hospital of Guangzhou Medical College, Guangzhou, China; the Firestone Institute for Respiratory Health (Wang, Greene, Sears), St. Joseph's Healthcare, Hamilton, Ont.; the Department of Medicine (Wang, Greene, Sears), McMaster University, Hamilton, Ont.; the Department of Paediatrics (Wong), The Chinese University of Hong Kong, Shatin, Hong Kong, China; the Clinical and Education Centre for Asthma (Chen, Ma), Capital Institute of Paediatrics, Beijing, China; the Department of Pediatrics (Ferguson), University of British Columbia, Vancouver, BC; and the Department of Medicine and Therapeutics (Lai), The Chinese University of Hong Kong, Shatin, Hong Kong, China


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  		Table 1.

 

Figure 119
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  		Figure 1: Flow diagram of study participants from among all 13- and 14-year-old children participating in phase 3 of the International Study of Asthma and Allergies in Childhood at study centres in China and Vancouver, Canada.

 

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  		Table 2.

 

Figure 219
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  		Figure 2: Results of multivariable logistic regression analysis for prevalence of wheezing and asthma among 13- and 14-year-old children in China and Vancouver, Canada. *Adjusted for body mass index, maternal education, number and order of siblings, parental smoking, truck exposure and pets at home. Further data are presented in Appendices 2 and 3 (available at www.cmaj.ca/cgi/content/full/179/11/1133/DC2). Note: CI = confidence interval, OR = odds ratio.

 

Figure 319
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  		Figure 3: Results of multivariable logistic regression analysis for prevalence rates of severe asthma among 13- and 14-year-old children in China and Vancouver. *Adjusted for body mass index, maternal education, number and order of siblings, parental smoking, truck exposure and pets at home. Further data are presented in Appendix 4 (available at www.cmaj.ca/cgi/content/full/179/11/1133/DC2). Note: The number of adolescents in each group was as listed in Figure 2. CI = confidence interval, OR = odds ratio.

 

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  		Table 3.