Huge variation in obtaining ethical permission for a non-interventional observational study in Europe
Dylan W. de Lange, Bertrand Guidet, Finn H. Andersen, Antonio Artigas, Guidio Bertolini, Rui Moreno, Steffen Christensen, Maurizio Cecconi, Christina Agvald-Ohman, Primoz Gradisek, Christian Jung, Brian J. Marsh, Sandra Oeyen, Bernardo Bollen Pinto, Wojciech Szczeklik, Ximena Watson, Tilemachos Zafeiridis & Hans Flaatten
BMC Medical Ethics 20 (1):39 (2019)
Add citationsYou must login to add citations.
Experimental design is one aspect of a scientific method. A well-designed, properly conducted experiment aims to control variables in order to isolate and manipulate causal effects and thereby maximize internal validity, support causal inferences, and guarantee reliable results. Traditionally employed in the natural sciences, experimental design has become an important part of research in the social and behavioral sciences. Experimental methods are also endorsed as the most reliable guides to policy effectiveness. Through a discussion of some of the central concepts (...)