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The United Kingdom (UK) ratified Framework Convention on Tobacco Control (FCTC) on December 16, 2004. In 2002, a team of researchers from Australia, Canada, the United Kingdom, and the United States launched the flagship ITC Four Country (4C) Survey. Ten survey waves of ITC 4C Survey have been conducted among a cohort of adult smokers aged 18 and older in the UK. In 2003, the UK (Waves 1-4) along with Ireland (Waves 1-3) established another cohort to measure smoke-free regulations and this cohort was joined by Scotland in the last two waves of the UK-Ireland cohort. In 2006, the ITC Project monitored the reactions and support for the new smoke-free laws in Scotland (launched along with ITC Ireland (IE) Survey). Two waves were conducted in Scotland among a cohort of adult smokers and non-smokers aged 18 and older. In 2016, the team expanded the cigarette smoking 4C survey into the ITC Four Country Smoking and Vaping (4CV3) Survey, to investigate the relationship between nicotine vaping products (NVPs) and/or heated tobacco products (HTPs) and cigarette use, and to inform emerging policies related to NVPs and/or HTPs. Three survey waves of the 4CV Survey have been conducted among adult smokers, recent former smokers, vapers, and HTP users in England only (not the UK) as well as Australia, Canada, and the United States. These four countries have similar cigarette-smoking rates, but divergent policies on vaping product/HTP use.

Survey Overview

Survey Mode: Computer Assisted Telephone Interview (CATI) and/or Web Interview
Wave Survey Dates Survey Sample Size
4C1-UK-Cohort1 October 30 to December 30, 2002 2,401 Smokers
4C2-UK-Cohort1 May 16 to September 28, 2003 2,120 (1,935 Smokers and 185 Quitters)
4C3-UK-Cohort1 June 3 to December 27, 2004 2,080 (1,847 Smokers and 233 Quitters)
4C4-UK-Cohort1 October 10, 2005 to January 31, 2006 2,043 (1,744 Smokers and 299 Quitters)
4C5-UK-Cohort1 October 11, 2006 to February 17, 2007 2,019 (1,721 Smokers and 298 Quitters)
4C6-UK-Cohort1 September 21, 2007 to February 12, 2008 2,007 (1,665 Smokers and 342 Quitters)
4C7-UK-Cohort1 October 28, 2008 to July 28, 2009 1,823 (1,497 Smokers and 326 Quitters)
4C8-UK-Cohort1 July 13, 2010 to June 24, 2011 1,325 (977 Smokers and 348 Quitters)
4C9-UK-Cohort1 February 7 to September 10, 2013 1,403 (1,103 Smokers and 300 Quitters)
4C10-UK-Cohort1 August 27 to December 15, 2014 1,470 (1,131 Smokers and 339 Quitters)
Survey Mode: Computer Assisted Telephone Interview (CATI) 1
Wave Survey Dates Survey Sample Size
UK1-Cohort2 December 10, 2003 to January 19, 2004 806 Smokers
UK2-Cohort2 December 9, 2004 to January 29, 2005 493 Smokers
UK3-Cohort2 February 14 to March 26, 2006 1,208 (828 Smokers, 80 Quitters, and 300 Non-Smokers)
UK4-Cohort2 February 15 to April 16, 2007 880 (449 Smokers, 55 Quitters, and 376 Non-Smokers)
Survey Mode: Computer Assisted Telephone Interview (CATI) 2
Wave Survey Dates Survey Sample Size
IES3-Scotland February 14 to March 26, 2006 808 (507 Smokers and 301 Non-Smokers)
IES4-Scotland February 15 to April 16, 2007 839 (461 Smokers, 46 Quitters, and 332 Non-Smokers)
Survey Mode: Web Interview
Wave Survey Dates Survey Sample Size
4CV1-EN July 7 to September 30, 2016 4,324 (1,865 Smokers, 207 Quitters, 231 Nicotine Vaping Product Users, and 2,021 Dual Smoking-Vaping Product Users)
4CV2-EN February 23 to July 9, 2018 4,726 (1,810 Smokers, 214 Quitters, 271 Nicotine Vaping Product Users and 2,431 Dual Smoking-Vaping Product Users)
4CV3-EN February 24 to May 15, 2020 4,000* Smokers, Quitters, and Nicotine Vaping Product and/or Heated Tobacco Product Users (*Target sample size)

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