A data collection method that can screen respondents easily and inexpensively,such as with telephone or Internet modes,is desirable with a low-incidence-rate situation because a great many potential respondents must be contacted but a large percentage of these would not qualify to take the survey.

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When dealing with a low-incidence-rate situation, a screening process is necessary to identify the eligible respondents. Using methods like telephone or internet surveys is desirable because they are relatively inexpensive and efficient in reaching large numbers of potential respondents, and they can quickly screen out those who don't meet the criteria for the survey.

A Data Collection Method That Can Screen Respondents Easily and Inexpensively,such