title: Responsiveness of outcome measures in patients with superior labral anterior and posterior lesions.
abstract: BACKGROUND
  Evaluation of patients with superior labral anterior and posterior (SLAP) lesions requires outcome measures validated for the purpose. The present study aimed to evaluate the responsiveness of the Rowe score, Oxford Instability Shoulder Score (OISS), Western Ontario Shoulder Instability Index (WOSI) and EuroQol (EQ-5D and EQ-VAS) in patients treated for SLAP lesions.
  
  
  METHODS
  Eighty-nine patients were included: 34 had arthroscopic labral repair, 28 had mini-open biceps tenodesis and 27 had physical treatment. The outcome measures were administrated before treatment and after 6 months. Responsiveness was evaluated using standardized response mean (SRM), area under receiver-operating characteristic curve (ROCAUC), reliable chance proportion (RCP) statistics and hypothesis testing. Minimal clinically important change (MCIC) estimates were reported.
  
  
  RESULTS
  All outcome measures had high values of SRM (0.86-1.92). RCPs for the improved group were 68% to 79% for OISS, WOSI and Rowe score, and 15% to 49% for EuroQol. ROCAUC was >0.70 for all outcomes. MCIC estimates were 8 and 10 for OISS; 451 and 569 for WOSI; 17 and 18 for Rowe score; 0.39 and 0.53 for EQ-5D; and 35 and 41 for EQ-VAS. Responsiveness tested with hypotheses favours the shoulder-specific outcomes.
  
  
  CONCLUSIONS
  OISS, WOSI and Rowe score are more responsive than EuroQol in evaluation of patients with SLAP lesions.
authors: Department of Orthopedic Surgery, Lovisenberg Diaconal Hospital, Oslo, Norway.
authors: Øystein
authors: Ø
authors: Skare
authors: Department of Pediatrics, Oslo University Hospital Ullevål, Oslo, Norway.
authors: Petter
authors: P
authors: Mowinckel
authors: Department of Orthopedic Surgery, Lovisenberg Diaconal Hospital, Oslo, Norway.
authors: Cecilie Piene
authors: CP
authors: Schrøder
authors: Department of Orthopedic Surgery, Sørlandet Hospital, Arendal, Norway.
authors: Sigurd
authors: S
authors: Liavaag
authors: Department of Orthopedic Surgery, Oslo University Hospital Rikshospitalet, Oslo, Norway.
authors: Olav
authors: O
authors: Reikerås
authors: Department of Physical Medicine and Rehabilitation, Oslo University Hospital, Ullevål, Oslo, Norway.
authors: Jens Ivar
authors: JI
authors: Brox
keywords: Minimal clinically important change; SLAP lesions; outcome measures; responsiveness