TY - JOUR T1 - Methods of the International Tobacco Control (ITC) China Survey: Waves 1, 2 and 3 JF - Tobacco Control JO - Tob Control SP - iv1 LP - iv5 DO - 10.1136/tobaccocontrol-2014-052025 VL - 24 IS - Suppl 4 AU - Changbao Wu AU - Mary E Thompson AU - Geoffrey T Fong AU - Yuan Jiang AU - Yan Yang AU - Guoze Feng AU - Anne C K Quah Y1 - 2015/11/01 UR - http://tobaccocontrol.bmj.com/content/24/Suppl_4/iv1.abstract N2 - 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. ER -