RT Journal Article T1 Inter‐observer reliability of the Onychomycosis Severity Index depending on clinical experience: A review of 50 cases A1 Navarro Pérez, David A1 García Oreja, Sara A1 Tardaguila García, Aroa A1 León Herce, Diego A1 Álvaro Afonso, Francisco Javier A1 Lázaro Martínez, José Luis AB Background: Onychomycosis (ONM) is the most prevalent nail unit pathology, and its severity and monitoring are often based on the visual judgement of clinicians.Objective: The objective of this study is to assess the reliability of the Onychomycosis Severity Index (OSI) classification when utilized by three clinicians with varying lev-els of clinical experience: an experienced podiatrist (with 5 years of experience), a moderately experienced podiatrist (with 2 years of experience) and an inexperienced podiatrist (a recent graduate familiar with the OSI classification but lacking clinical experience). Additionally, we compared the severity assessments made through visual inspection with those determined using the OSI by different clinicians.Methods: We evaluated reliability using the intraclass correlation index (ICC), analys-ing 50 images of ONM.Results: The OSI demonstrated a very high level of reliability (ICC: 0.889) across cli-nicians, irrespective of their experience levels. Conversely, a statistically significant increase in severity was observed when comparing visual assessments with the OSI (p< .001) for ONM severity evaluation.Conclusion: The OSI proves to be a reproducible classification system, regardless of the clinical experience of the practitioner employing it. PB Wiley SN 0933-7407 SN 1439-0507 YR 2024 FD 2024-01 LK https://hdl.handle.net/20.500.14352/103331 UL https://hdl.handle.net/20.500.14352/103331 LA eng NO 2023 Acuerdos transformativos CRUE DS Docta Complutense RD 10 abr 2025