OBJECTIVE: To develop a tool to measure quality of life (QOL) in the dysarthric speaker (QOL-DyS). PATIENTS AND METHOD: The study consisted of two phases: scale development and item reduction (phase 1), and reliability and validity analysis (phase 2). The 100-item 'Dysarthria from the Point of View of the Dysarthric Patient' questionnaire was used for item development; the data from 50 dysarthric patients were measured for internal consistency and the 40-item QOL-DyS was developed. A second group of 50 dysarthric patients and 30 control participants were recruited for phase 2. Internal consistency and test-retest reliability were analyzed through Cronbach's α coefficient and intraclass correlation coefficient (ICC), respectively. The scores obtained from the pathological and the control group were compared using the Mann-Whitney test. Finally, the correlation between the QOL-DyS and dysarthria severity was assessed using the Spearman test. RESULTS: An excellent internal consistency (α = 0.90) and test-retest reliability (ICC = 0.98, 95% CI: 0.97-0.99) were found; the score difference between the dysarthric and control groups was significant (p < 0.001). The QOL-DyS scores correlated positively with the severity of dysarthria (r = 0.43). CONCLUSION: The QOL-DyS is a reliable and valid tool to assess QOL in patients with dysarthria.

Reliability and validity of an instrument to measure quality of life in the dysarthric speaker (QOL-DyS) / V. Piacentini, A. Zuin, D. Cattaneo, A. Schindler. - In: FOLIA PHONIATRICA ET LOGOPAEDICA. - ISSN 1021-7762. - 63:6(2011), pp. 289-295. [10.1159/000322800]

Reliability and validity of an instrument to measure quality of life in the dysarthric speaker (QOL-DyS)

D. Cattaneo;A. Schindler
Ultimo
2011

Abstract

OBJECTIVE: To develop a tool to measure quality of life (QOL) in the dysarthric speaker (QOL-DyS). PATIENTS AND METHOD: The study consisted of two phases: scale development and item reduction (phase 1), and reliability and validity analysis (phase 2). The 100-item 'Dysarthria from the Point of View of the Dysarthric Patient' questionnaire was used for item development; the data from 50 dysarthric patients were measured for internal consistency and the 40-item QOL-DyS was developed. A second group of 50 dysarthric patients and 30 control participants were recruited for phase 2. Internal consistency and test-retest reliability were analyzed through Cronbach's α coefficient and intraclass correlation coefficient (ICC), respectively. The scores obtained from the pathological and the control group were compared using the Mann-Whitney test. Finally, the correlation between the QOL-DyS and dysarthria severity was assessed using the Spearman test. RESULTS: An excellent internal consistency (α = 0.90) and test-retest reliability (ICC = 0.98, 95% CI: 0.97-0.99) were found; the score difference between the dysarthric and control groups was significant (p < 0.001). The QOL-DyS scores correlated positively with the severity of dysarthria (r = 0.43). CONCLUSION: The QOL-DyS is a reliable and valid tool to assess QOL in patients with dysarthria.
Dysarthria ; Quality of life ; Self-assessment ; Reliability ; Validity
Settore MED/32 - Audiologia
Settore MED/26 - Neurologia
Settore MED/50 - Scienze Tecniche Mediche Applicate
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/169271
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