• Arch Orthop Trauma Surg · Nov 2024

    Validation of the hip disability osteoarthritis outcome Score-12 shortform in a German cohort.

    • Matthias Büttner, Felix Wunderlich, Philipp Drees, Yama Afghanyar, Sebastian Fischer, Philipp Schippers, and Lukas Eckhard.
    • Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
    • Arch Orthop Trauma Surg. 2024 Nov 1; 144 (11): 476747734767-4773.

    IntroductionTo consider the inherent respondent burden of PROMs, the HOOS-12 as a shortform of the well-established HOOS questionnaire has been published. While the HOOS-12 has been validated in an initial study, further evaluation in other, non-English speaking cohorts is necessary. We therefore aimed to evaluate responsiveness, convergent construct validity, internal consistency, and floor and ceiling effects of the HOOS-12 in a cross-sectoral german cohort.Materials And MethodsEuropean Quality of Life 5 Dimensions scores and HOOS data of patients undergoing total hip arthroplasty (THA) were used for the analyses. HOOS-12 scores were calculated from the full length HOOS. Statistical analysis was conducted, investigating internal consistency, floor and ceiling effects, convergent and discriminant validity, responsiveness, and known-group comparisons.ResultsA ceiling effect was present for postoperative HOOS-12 score and its pain, function and QoL subscales. Internal consistency was high between baseline and all follow ups, inter-item correlation was high (Cronbach's alpha > 0.30) for HOOS-12 score and all subscales. Correlation of HOOS-12 pain with HOOS pain was high (r = 0.9). Correlation of HOOS-12 function with HOOS ADL and HOOS S/R was high (r = 0.89, r = 0.74). Correlation was moderate between HOOS-12 pain and HOOS-12 function with its respective EQ-5D score (r=-0.58, r=-0.59).ConclusionThe HOOS-12 showed good convergent construct validity and is responsive to changes in pain, function, QoL and hip impact between preoperatively and 1 year postoperatively. A substantial ceiling effect for all subscales at 1 year postoperatively limits the ability to capture variance across particularly well performing patients.Trial RegistrationThe Trial is registered with the German Clinical Trials Register ( https://www.drks.de ; DRKS00013972; 23 March 23, 2018).© 2024. The Author(s).

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