Glossary of Terms for Evidence-Based Orthopaedics*

The glossary below provides definitions for several terms found in the structured abstracts of the Evidence-Based Orthopaedics section, many of which may not be familiar to orthopaedic surgeons.

The following terms are commonly used in abstracts describing trials of therapeutic interventions.

EER is the experimental (new treatment) event rate.

CER is the control (old treatment or nontreatment) event rate.

CI (confidence interval) quantifies the uncertainty in measurement. CI is usually reported as a 95% CI, which is the range of values within which we can be 95% sure that the true value …

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