Advice on the most productive and cost-effective method of data collection (mail, telephone, in-person, internet/web-based, or mixed-mode).
Use of new survey technologies for collection of sensitive data.
Specification of procedures for maximizing response rates within the framework of available resources. For example, recommended number of attempts to contact respondents, securing initial cooperation, use of incentives, design of effective cover letters, following-up incomplete interviews, converting refusals into acceptances, and use of mixed-mode designs.
