What does it mean to control for confounding, and when do we actually need to do it? To answer this, we need a well-defined research question, driven by the goal of the study. For descriptive goals, ...
Designing good research questions goes well beyond the standard definitions of clarity, focus and tractability, and even beyond ‘novelty’ in the strictest sense. This Comment describes the iterative ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results