This paper describes the methods of sampling design and data collection of Wave 1, 2 and 3 of the International Tobacco Control (ITC) China Survey, with major focus on longitudinal features of the study. Key measures of quality of the survey data, such as retention rates and final sample sizes, are presented. Sample replenishment procedures are outlined, including the addition of a new city, Kunming, at Wave 3. Methods for constructing the longitudinal and cross-sectional survey weights are briefly described.
- Public policy
- Secondhand smoke
- Surveillance and monitoring
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