Adema, M. (Marco) (2014) Validiteit en betrouwbaarheid van de Nederlandstalige versie van de International Hip Outcome Tool (iHOT-12NL). thesis, Medicine.
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Abstract
Background: Hip disorders are problems that do not only occur in older persons, but also in younger persons. Hip disorders can lead to restrictions in physical functioning and/or a reduction in health-related quality of life. Existing questionnaires in the Dutch language are developed for older persons and therefore not appropriate to measure physical functioning in younger, active persons with hip disorders. This because of the fact that younger persons have different goals and expectations regarding to physical activities, for example in sports, which are not measured by existing questionnaires. This means, that there is a lack of valid outcome measures in the Dutch language to evaluate physical functioning and health-related quality of life in a younger patient group with hip disorders. The English questionnaire ‘ international Hip Outcome Tool 12’ (iHOT-12) has been developed to measure physical functioning and health-related quality of life in young, active patients with hip disorders. Purpose of this study was to translate and cross-culturally adapt the iHOT-12 into Dutch. Subsequently validity and test-retest reliability of the Dutch version (iHOT-12NL) were determined. Methods: The study was carried out at the departments of Orthopedics of University Medical Center Groningen and Martini hospital Groningen from January until July 2014. A factor analysis was used to assess structural validity of the iHOT-12NL. Construct validity was established by comparing the iHOT-12NL with three questionnaires (SF-36, HAGOS, HOOS). A-priori, 17 hypotheses related to the correlation between the iHOT-12NL and the subscales of these questionnaires were defined. In addition, one hypothesis was defined about the difference in iHOT-12NL scores between physically active patients and less physically active patients. Spearman’s Rho correlation coefficients were used to determine the correlation between iHOT-12NL and the three questionnaires. To attest the difference in iHOT-12NL scores between physically active and less physically active patients a Student’s ttest was used. To determine test-retest reliability, the intraclass correlation coefficient (ICC) between the first and second administration of the iHOT-12NL was calculated. A Bland and Altman analysis was performed to determine if systematic bias was present between the first and second administration of the iHOT-12NL. Results: One hundred and eighty-three patients were included. Factor analysis resulted in one component for the iHOT-12NL. The iHOT-12NL showed a good construct validity, as 83% of the a-priori defined hypotheses were confirmed. Strong correlations were found with all subscales of the HOOS, most subscales of the HAGOS and a few subscales of the SF-36. Significant higher scores on the iHOT-12NL were found for physically active patients in comparison with less physically active patients. With an ICC of 0.93 a good test-retest reliability was shown. No systematic bias was detected between the two administrations of the iHOT-12NL. Conclusion: The English iHOT-12 was successfully translated and cross-culturally adapted into Dutch (iHOT-12NL). The iHOT-12NL showed good validity and test-retest reliability. The iHOT-12NL can be used as a patient reported outcome measure in young, active patients with hip disorders to measure physical function and health-related quality of life.
| Item Type: | Thesis (Thesis) |
|---|---|
| Supervisor name: | Stevens, Dr. M. |
| Supervisor name: | Reininga, Mw. Dr. I.H.F. and Martiniziekenhuis |
| Faculty: | Medical Sciences |
| Date Deposited: | 25 Jun 2020 10:54 |
| Last Modified: | 25 Jun 2020 10:54 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/1494 |
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