Browsing by Author "Kruger, Neil"

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    Open Access
    Conversion of the Knee Osteoarthritis Outcome Score – Physical Shortform into a Video Format
    (2018) de Roos, Jordy Anterio; Held, Michael; Kruger, Neil
    Introduction Patient Reported Outcome Measures (PROMs) are an integral part of evidence-based medicine and provide the necessary information for clinicians to make decisions in patient management. The Knee Osteoarthritis Outcome Score-Physical Function Short Form (KOOS-PS) was developed to assess patients’ perception of their knee’s function. Yet, there are cultural and language barriers, when implementing PROMs in a setting for which it was not originally designed, particularly in low-middle income countries with low levels of education. To address these challenges, the study introduces a video version of the KOOS-PS with the aim to validate it in a local setting. Methods This is a validation study of a video version of the KOOS-PS against various other knee scores. The KOOS-PS was converted into videos and a Likert scale in form of icons was used as grading system. The videos were reviewed by a panel for acceptance and comprehensibility. Second, the video score was tested in a prospective study against other internationally accepted and validated knee PROMs. Patients were recruited from both the public and private sectors of healthcare. Descriptive statistics, Pearson’s correlation coefficient and Cronbach’s Alpha were used for psychometric testing. Results The mean time taken to complete the video score was 79 seconds. Internal consistency received an excellent Cronbach’s Alpha of 0.89. Reproducibility received a Pearson Correlation Coefficient of r=0.91 which illustrates there was no significant difference. Pearson Correlation coefficients between the converted video score and other validated scores indicated high correlation. Conclusion This is the first validation study that converts a written PROM into a video format. The results show that the video score is reliable, acceptable, and valid, and can therefore be used in clinical practice.
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    The Oxford Shoulder Score: Cross-cultural adaption and translation validation into Afrikaans
    (2018) Kruger, Neil; Held, Michael; Roche, Steve
    Purpose: The Oxford Shoulder Score (OSS) is a robust and universally utilised shoulder score that has been translated for use in Western and Asian countries. This study aimed to translate, cross-culturally adapt and psychometrically validate the Afrikaans version of the OSS for use in Africa. Methods: Translation and cross-cultural adaptation was performed in accordance with guidelines in the literature. 108 consecutive patients with either degenerative or inflammatory pain of the shoulder were prospectively enrolled. Patients were evaluated by completing the Afrikaans OSS, Constant-Murley, quickDASH, and the Subjective Shoulder Value (SSV) scores. Comprehensibility and acceptance, as well as any floor or ceiling effects, were calculated. Reliability was assessed through reproducibility. Internal consistency was assessed using Cronbach’s alpha. Validity was determined using a Pearson Correlation Co-efficient between the Afrikaans OSS and the other validated shoulder scores. Results: Comprehensibility and acceptance were excellent, and no floor or ceiling effects were observed. Reproducibility (r = 0.99) and internal consistency (Cronbach’s alpha = 0.93) were both excellent. Correlation of the Afrikaans OSS with the Constant-Murley and quickDASH was excellent (r = 0.84; r = 0.81 respectively), and very good with the SSV and VAS pain score (r = 0.73; r = 0.66). Conclusion: The Afrikaans OSS proved understandable, acceptable, reliable and valid. It is an appropriate instrument for use in Afrikaans speaking patients with shoulder pain from degenerative or inflammatory origin.