TY - JOUR T1 - Methods matter: clinical prediction models will benefit sports medicine practice, but only if they are properly developed and validated JF - British Journal of Sports Medicine JO - Br J Sports Med SP - 1319 LP - 1321 DO - 10.1136/bjsports-2021-104329 VL - 55 IS - 23 AU - Garrett S Bullock AU - Tom Hughes AU - Jamie C Sergeant AU - Michael J Callaghan AU - Richard Riley AU - Gary Collins Y1 - 2021/12/01 UR - http://bjsm.bmj.com/content/55/23/1319.abstract N2 - Sports medicine clinicians are expected to make accurate diagnoses, estimate prognoses and identify athletes at risk of sustaining an injury.1 These complex decisions are dependent on clinical reasoning, which is informed by, and often biased toward, a practitioner’s scientific knowledge and experience. Clinical prediction models are developed by researchers to help facilitate such decisions in practice2; data for multiple predictor variables are combined to estimate an individual’s risk of a health outcome either being present (diagnosis) or whether it will occur in future (prognosis).3 Despite being employed widely in clinical medicine, clinical prediction models are uncommon in sports medicine. Clinical prediction models can offer benefits to both practitioners and athletes, but only if they are developed and validated using rigorous methods and transparently reported so that potential users can judge their accuracy and usefulness.Therefore, the purpose of this editorial is to describe the recommended steps for clinical prediction development and validation and to guide practitioners using and interpreting prediction models in sports medicine.The first step in developing a prediction model is to identify its clinical need, the target population and how and when it would fit into the clinical workflow. Models should predict outcomes that are relevant to sport stakeholders, and be clearly defined, including how and when assessed.4 Next is to identify any existing models that could be evaluated or updated. If not, … ER -