Rasch analysis of SF-Qualiveen in multiple sclerosis.
Neurourol Urodyn
; 36(4): 1161-1166, 2017 Apr.
Article
en En
| MEDLINE
| ID: mdl-27460549
ABSTRACT
BACKGROUND:
A 30-item Qualiveen questionnaire was developed to measure the impact of urinary problems on everyday living in spinal cord injury, and subsequently an 8-item SF-Qualiveen was developed for those with multiple sclerosis (MS). The validity of this short form has not been previously examined using modern psychometric techniques, such as the Rasch measurement model.OBJECTIVE:
The aim of this study is to test if the short form meets the requirements of the Rasch model.METHODS:
A total of 401 patients with clinically definite MS were given the questionnaire at three neuroscience centres in the UK.RESULTS:
A total of 258 patients (64.3% response) completed the questionnaire. The original scale failed to meet the expectations of the Rasch model. A two-testlet solution was sought to account for local dependence, differential item functioning and disordered thresholds. After the modifications were made the scale fitted the model (χ2 = 5.93 P = 0.4305), had high internal consistency (α = 0.88) and was unidimensional.CONCLUSIONS:
SF-Qualiveen is a simple and valid measure of the impact of urinary problems in multiple sclerosis, which meets the requirements of the Rasch measurement model. Summed ordinal scores can be converted to interval-level using the transformation table provided.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Psicometría
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Trastornos Urinarios
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Vejiga Urinaria Neurogénica
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Encuestas y Cuestionarios
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Esclerosis Múltiple
Tipo de estudio:
Clinical_trials
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Etiology_studies
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Prognostic_studies
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Risk_factors_studies
Límite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Neurourol Urodyn
Año:
2017
Tipo del documento:
Article
País de afiliación:
Reino Unido