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Development of a patient-oriented disease specific outcome measure of health-related quality of life (HRQOL) for musculoskeletal oncology patients.
Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association 2018 November 14
BACKGROUND: According to improved functional outcome and life expectancy in orthopaedic oncology patients, there has been a growing interest in not only oncologic and functional outcomes but also health-related quality of life (HRQOL), including body image, mental status, or social activities, after surgery. However, there has been a lack of disease-specific measures focusing on the ability of orthopaedic oncology patients to evaluate their HRQOL comprehensively. Therefore, our aims in the present study were 1) to develop a patient-oriented disease-specific outcome measure of HRQOL for musculoskeletal oncology patients (COMMON-LE), and 2) to examine the practical applicability, reliability and validity of the COMMON-LE for patients with musculoskeletal tumors in the lower extremity.
METHODS: The COMMON-LE was developed by expert committee of orthopaedic oncology and rehabilitation. A total of 101 patients were surveyed using the COMMON-LE, as well as the TESS, the MSTS score, and the SF-36, to assess their psychometric characteristics, including reliability, validity, and responsiveness.
RESULTS: The COMMON-LE showed no marked floor and ceiling effects. Test-retest reliability and internal consistency determined using the intraclass correlation coefficient (0.928) and Cronbach's alpha (0.948-0.968), respectively, were excellent. Each domain of the COMMON-LE (pain, ADL, socioemotional condition and general health) was well correlated with the scores of the standard measures (SF-36, TESS, MSTS score). Factor analysis and the AIC network showed the questionnaire items of the COMMON-LE were clearly separable into three clusters according to their content, corresponding to each domain of the questionnaire.
CONCLUSIONS: We have successfully developed and validated a disease-specific measure, the COMMON-LE, to evaluate not only physical function, but also various aspects of HRQOL in patients with musculoskeletal tumors. The COMMON-LE has sufficient reliability and internal consistency, and good validity, and appears to be practically applicable to this group of patients.
METHODS: The COMMON-LE was developed by expert committee of orthopaedic oncology and rehabilitation. A total of 101 patients were surveyed using the COMMON-LE, as well as the TESS, the MSTS score, and the SF-36, to assess their psychometric characteristics, including reliability, validity, and responsiveness.
RESULTS: The COMMON-LE showed no marked floor and ceiling effects. Test-retest reliability and internal consistency determined using the intraclass correlation coefficient (0.928) and Cronbach's alpha (0.948-0.968), respectively, were excellent. Each domain of the COMMON-LE (pain, ADL, socioemotional condition and general health) was well correlated with the scores of the standard measures (SF-36, TESS, MSTS score). Factor analysis and the AIC network showed the questionnaire items of the COMMON-LE were clearly separable into three clusters according to their content, corresponding to each domain of the questionnaire.
CONCLUSIONS: We have successfully developed and validated a disease-specific measure, the COMMON-LE, to evaluate not only physical function, but also various aspects of HRQOL in patients with musculoskeletal tumors. The COMMON-LE has sufficient reliability and internal consistency, and good validity, and appears to be practically applicable to this group of patients.
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