Core Outcome Set

Core outcome sets improve comparability across evaluations. Standardising outcomes is especially important in rare disorders because it improves comparability and potential pooling of study data. A core outcome set is an agreed minimum set of outcomes for all clinical studies in a specific condition. A core outcome set is a standardized minimum set of outcomes recommended for measurement and reporting in a population or condition. The COS defines what to measure but does not yet define exact measurement instruments, timing, or reporting standards. Existing OA-TOF research is heterogeneous in measured outcomes, limiting comparisons across studies. The COS study is registered with the COMET Initiative and follows both the COMET Handbook and COS-STAD recommendations. Consensus-based approaches may inherently prioritise commonly reported outcomes, potentially overlooking emerging biomarkers such as epigenetic markers and advanced neuroimaging features. A Core Outcome Set is an agreed-upon minimum set of outcomes that should be measured and reported in all clinical trials and observational studies for a specific health condition. The COS under development is applicable to preterm infan…