Online Appendices
Files in this Data Supplement:
- Appendix 1: Detailed information about methods
- Appendix 2: Prevalence of asthma symptoms in the 6 selected groups of 13- to 14-year-old males, China and Vancouver
- Appendix 3: Prevalence of asthma symptoms in the 6 selected groups of 13- to 14-year-old females, China and Vancouver
- Appendix 4: Prevalence of severe current wheezing in the 6 selected groups of 13- to 14-year-old children, by sex, China and Vancouver