1 NSW Centre for the Advancement of Adolescent Health, Department of Paediatrics and Child Health, University of Sydney at The Children's Hospital at Westmead, New South Wales, Australia 2 Physical ...

Most time-series research fails to consider measurement issues that are addressed regularly in cross-sectional research designs. However, to measure specified constructs in time-series research, ...

A summary of ABC News' polling standards and survey methodology follows. ABC News maintains standards for disclosure, validity, reliability and unbiased content in survey research and evaluates ...