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  • 1. Estimating sample size for complex surveys: building consensus in an environment of multiple hypotheses, multiple stakeholders and limited budgets Archived
    Articles and reports: 11-522-X200600110441
    Description:

    How does one efficiently estimate sample size while building concensus among multiple investigators for multi-purpose projects? We present a template using common spreadsheet software to provide estimates of power, precision, and financial costs under varying sampling scenarios, as used in development of the Ontario Tobacco Survey. In addition to cost estimates, complex sample size formulae were nested within a spreadsheet to determine power and precision, incorporating user-defined design effects and loss-to-followup. Common spreadsheet software can be used in conjunction with complex formulae to enhance knowledge exchange between the methodologists and stakeholders; in effect demystifying the "sample size black box".

    Release date: 2008-03-17
  • 2. Development and design of the Ontario Tobacco Survey Archived
    Articles and reports: 11-522-X200600110444
    Geography: Province or territory
    Description:

    General population health surveys often include small samples of smokers. Few longitudinal studies specific to smoking have been carried out. We discuss development of the Ontario Tobacco Survey (OTS) which combines a rolling longitudinal, and repeated cross-sectional components. The OTS began in July 2005 using random selection and data-collection by telephones. Every 6 months, new samples of smokers and non-smokers provide data on smoking behaviours and attitudes. Smokers enter a panel study and are followed for changes in smoking influences and behaviour. The design is proving to be cost effective in meeting sample requirements for multiple research objectives.

    Release date: 2008-03-17
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Articles and reports (2)

Articles and reports (2) ((2 results))

  • 1. Estimating sample size for complex surveys: building consensus in an environment of multiple hypotheses, multiple stakeholders and limited budgets Archived
    Articles and reports: 11-522-X200600110441
    Description:

    How does one efficiently estimate sample size while building concensus among multiple investigators for multi-purpose projects? We present a template using common spreadsheet software to provide estimates of power, precision, and financial costs under varying sampling scenarios, as used in development of the Ontario Tobacco Survey. In addition to cost estimates, complex sample size formulae were nested within a spreadsheet to determine power and precision, incorporating user-defined design effects and loss-to-followup. Common spreadsheet software can be used in conjunction with complex formulae to enhance knowledge exchange between the methodologists and stakeholders; in effect demystifying the "sample size black box".

    Release date: 2008-03-17
  • 2. Development and design of the Ontario Tobacco Survey Archived
    Articles and reports: 11-522-X200600110444
    Geography: Province or territory
    Description:

    General population health surveys often include small samples of smokers. Few longitudinal studies specific to smoking have been carried out. We discuss development of the Ontario Tobacco Survey (OTS) which combines a rolling longitudinal, and repeated cross-sectional components. The OTS began in July 2005 using random selection and data-collection by telephones. Every 6 months, new samples of smokers and non-smokers provide data on smoking behaviours and attitudes. Smokers enter a panel study and are followed for changes in smoking influences and behaviour. The design is proving to be cost effective in meeting sample requirements for multiple research objectives.

    Release date: 2008-03-17
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