Importance Clinicians, patients, and policy makers rely on published results from clinical
trials to help make evidence-informed decisions. To critically evaluate and use trial results …

Background Patient‐reported outcome measures (PROMs) are questionnaires that collect
health outcomes directly from the people who experience them. This review critically …

Purpose To develop a set of consensus and empirically based reporting recommendations
for primary studies of the measurement properties of patient-reported outcome measures …

Sleep quality is an important clinical construct since it is increasingly common for people to
complain about poor sleep quality and its impact on daytime functioning. Moreover, poor …

Delphi is a scientific method to organize and structure an expert discussion aiming to
generate insights on controversial topics with limited information. The technique has seen a …

Background Scores on an outcome measurement instrument depend on the type and
settings of the instrument used, how instructions are given to patients, how professionals …

Background The test–retest reliability of the one-repetition maximum (1RM) test varies
across different studies. Given the inconsistent findings, it is unclear what the true reliability …

The COSMIN Study Design checklist is recommended for designing studies to evaluate
measurement properties of existing patient-reported outcome measures (PROMs). It can be …

Background Content validity is the most important measurement property of a patient-
reported outcome measure (PROM) and the most challenging to assess. Our aims were …

Purpose Systematic reviews of patient-reported outcome measures (PROMs) differ from
reviews of interventions and diagnostic test accuracy studies and are complex. In fact …