DescriptionForrester conducted a mail survey fielded from May to July 2011 of 10,802 US households and individuals ages 18 and older. Fieldwork in Canada was delayed due to a national postal workers' strike and was completed in October 2011 with a sample size of 436 Canadian respondents.For results based on randomly chosen samples of these sizes (N = 10,802 in the US and N = 436 in Canada), there is 95% confidence that the results have a statistical precision of plus or minus 0.94% of what they would be if the entire population of US households and individuals ages 18 and older had been surveyed and plus or minus 4.69% of what they would be if the entire population of Canadian households and individuals ages 18 and older had been surveyed.Forrester weighted the US head of household data by age, gender, household income, household size and composition, education level, region, and market size (combined statistical area). The weighting criteria for the US individual respondent data included all of the above with the addition of employment status. The survey sample size, when weighted, was 8,454 US respondents at the household level and 10,802 US respondents at the individual level.Forrester weighted the Canadian head of household data by age, gender, household income, household size, province, city size, and age/presence of children. The weighting criteria for the Canadian individual respondent data included age, gender, household income, household size, province, city size, and employment status. The survey sample size, when weighted, was 386 Canadian respondents at the household level and 436 Canadian respondents at the individual level.(Note: Weighted sample sizes can be different from the actual number of respondents to account for individuals generally underrepresented in mail panels.) The sample was drawn from members of TNS's panel, and respondents were motivated by a sweepstakes drawing. The sample provided by TNS is not a random sample. While individuals may have been randomly sampled from TNS's panel for this particular survey, they have previously chosen to take part in the TNS panel.
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