Data from mixed-mode questions are hard, if not impossible, to interpret accurately. The first part of this article will give an example of a mixed-mode question and an analysis of how to interpret ...

Questionnaires are widely used for data collection in health research and evaluation. Their design, use and analysis are key to accurate, comprehensive and complete data. This course is an ...

This is a preview. Log in through your library . Abstract The use of the World Wide Web to conduct surveys has grown rapidly over the past decade, raising concerns regarding data quality, ...