all but gives away the survey topic: How well have American cities adapted to the so-called new economy?
In addition, the responders were asked to add specific comments relevant to the survey topic.
Moreover, it seems that the survey topic is an important criterion for the self-selection process.
Coherent with survey topic, descriptive method is used in analyzing, resolving and interpreting the information about belt examples.
We informed candidates that the survey topic was general health rather than headache and sleep to avoid interest bias.
To minimized interest bias, we informed candidates that the survey topic was "social health issue" rather than headache.
We informed survey topic to candidates as "social health issue", rather than "headache disorder" before acceptance of survey to minimize interest bias of our survey.
To minimize interest bias, we informed candidates that the survey topic was "social health issue", rather than "headache disorder" before acceptance of survey.
Since household visits were unannounced and potential respondents were not informed about the survey topic, we believe we had little interest bias (due only to interruption of interviews after they had commenced).
Interest in the survey topic has been shown to influence response, and validation studies find that voters are more likely than non-voters to participate in telephone surveys.
