The ICC/ESOMAR Code on Market and Social Research sets out the professional and ethical rules which market researchers follow and has been adopted by more than 4,900 ESOMAR members and 60 national market research associations worldwide.
ESOMAR has endorsed AAPOR’s Standard Definitions; Final Dispositions of Case Codes and Outcome Rates for Surveys as best international practice in calculating response rates. The Definitions, which are aligned with WAPOR and ISO policies, provide a comprehensive way to describe the final disposition of cases and calculating outcome rates for surveys conducted by telephone, personal interviews in a sample of households and mail surveys.
AAPOR, the American Association for Public Opinion Research, includes providers and users of survey data in election polling, market research, statistics, research methodology, health related data collection and education. For details go to http://www.aapor.org/Standards-Ethics/Standard-Definitions-(1).aspx