EFAS Score - Validation of Danish Version by the Score Committee of the European Foot and Ankle Society (EFAS)

Martinus Richter; Per-Henrik Agren; Jean-Luc Besse; Maria Coester; Hakon Kofoed; Nicola Maffulli; Martijn Steultjens; Mick Nielsen; Jens Kurt Johansen

doi:10.1016/j.fas.2024.03.009

EFAS Score - Validation of Danish Version by the Score Committee of the European Foot and Ankle Society (EFAS)

Foot Ankle Surg. 2024 Mar 20:S1268-7731(24)00069-9. doi: 10.1016/j.fas.2024.03.009. Online ahead of print.

Authors

Martinus Richter¹, Per-Henrik Agren², Jean-Luc Besse³, Maria Coester⁴, Hakon Kofoed⁵, Nicola Maffulli⁶, Martijn Steultjens⁷, Mick Nielsen⁸, Jens Kurt Johansen⁹

Affiliations

¹ Department for Foot and Ankle Surgery Rummelsberg and Nuremberg, Schwarzenbruck, Germany. Electronic address: info@martinusrichter.de.
² Stockholms Fotkirurgklinik, Sophiahemmet University, Stockholm, Sweden.
³ Laboratoire de Biomecanique et Mecanique des Chocs, Universite Lyon, Lyon, France; Service de Chirurgie Orthopedique et Traumatologique, Hospices Civils de Lyon Centre Hospitalier Lyon-Sud, Pierre-Benite Cedex, France.
⁴ Department of Surgical Sciences, Uppsala University, Uppsala, Sweden; Department of Orthopaedics and Clinical Sciences, Lund University, Lund, Sweden.
⁵ Charlottenlund, Denmark.
⁶ Department of Trauma and Orthopaedic Surgery, Faculty of Medicine and Psychology, Sapienza University of Rome, Rome, Italy; Institute of Science and Technology in Medicine, Guy Hilton Research Centre, School of Medicine, Keele University, Stoke-on-Trent, UK; Centre for Sports and Exercise Medicine, Barts and the London School of Medicine and Surgery, Queen Mary University of London, London, UK.
⁷ The Science Citizen, Utrecht, the Netherlands.
⁸ Centre for Evidence-Based Orthopaedics (CEBO), Department of Orthopaedic Surgery, University Hospital Køge, Køge, Denmark.
⁹ Foot and Ankle Department, Hvidovre University Hospital, Hvidovre, Denmark.

PMID: 38548488
DOI: 10.1016/j.fas.2024.03.009

Abstract

Background: The Score Committee of the European Foot and Ankle Society (EFAS) developed, validated, and published the EFAS Score in 13 languages. Currently, the Danish version completed data acquisition and underwent further validation.

Methods: The data were collected pre-operatively and post-operatively at a minimum follow-up of 3 months and mean follow-up of 6 months. Item reduction, scale exploration, confirmatory analyses and responsiveness were executed using classical test theory and item response theory.

Results: The internal consistency was confirmed in the Danish version (Cronbach's Alpha 0.88). The Standard Error of Measurement (SEM) was 0.31 and is similar to other language versions. Between baseline and follow-up, 77.2% of patients showed an improvement on their EFAS score, with adequate responsiveness (effect size 1.05).

Conclusions: The Danish EFAS Score version was successfully validated in patients with a wide variety of foot and ankle pathologies. All score versions are freely available at www.efas.net.

Keywords: Ankle; Danish; Foot; Patient reported Outcome Measure (PROM); Score; Validation.