We need to get better in contrafactual thinking

This probably also applies to other medical subspecialties, but we orthopaedic surgeons are very bad at contrafactual thinking. For the sake of our patients, we need to understand better a hypothetical situation in which we could have done otherwise. Once again, something like this was written: Extremely medialized repair of large and massive tears not […]

Population health and orthopaedic surgeries

Both knee arthroscopy for partial meniscectomy and shoulder arthroscopy for acromioplasty were very common procedures few years back in orthopaedic surgery. During the first two decades of this millennium extensive amount of research has been published showing that the effect of these procedures to treat knee and shoulder pain and function is quite weak. Despite […]

Post-hoc power – Alone in the universe

Prologue Firstly, it is important to describe what post-hoc power really means. Post-hoc power is the power of the test using effect size observed and sample size used in the study. For this reason post-hoc power is often labeled as observed power. If for any experiment the effect size, parameter estimates and sample size is […]

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