The National Highway Traffic Safety Administration plans to continue gathering data for its crash-avoidance field study that is seeking comments from commercial motor carrier drivers about their ...

Survey work is a series of complex processes. At the outset, there is sample and questionnaire design, as well as field training. During the data collection stage, there is monitoring and remedial ...

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 ...

Efforts to address these data challenges are underway, as governments and national statistical offices, working with international partners, are increasingly expanding their national surveys to ...