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Journal Article
Validation Study
French validation of the Stroke Specific Quality of Life Scale (SS-QoL).
NeuroRehabilitation 2018
OBJECTIVE: To adapt the SS-QoL into French and test its psychometric properties.
METHODS: Seventy-seven patients from a population-based registry were enrolled 3 months after their stroke. SS-QoL, NIHSS score, Barthel index, HAD, FSS, SF-36 scales, and MMSE were administered at enrolment. SS-QoL was re-administered at 15 days and 2 months. Internal consistency was assessed by Cronbach's α coefficients, factorial validity by an exploratory factor analysis and external validity by Mann-Whitney test and Spearman's correlations (ρ), comparing SS-QoL scores with those obtained from established scales. Reliability was assessed by intra-class correlation coefficients (ICC) and responsiveness by standardized effect sizes (ES).
RESULTS: Test-retest and inter-observer reliabilities were excellent (ICC> 0.88). Internal consistency was acceptable (α= 0.65-0.91), except for the Personality domain (α= 0.58). Factor analysis individualized eight homogenous axes. SS-QoL scores were different between groups opposed by their modified Rankin score at enrolment or their overall quality of life compared with pre-stroke status (p < 0.001). Ten of the twelve domains correlated moderately (ρ> 0.35) to strongly (ρ> 0.5) with established measures. Nine domains were mildly to moderately responsive to change (ES> 0.3).
CONCLUSION: The French version of the SS-QoL is a valid, reliable and moderately responsive instrument.
METHODS: Seventy-seven patients from a population-based registry were enrolled 3 months after their stroke. SS-QoL, NIHSS score, Barthel index, HAD, FSS, SF-36 scales, and MMSE were administered at enrolment. SS-QoL was re-administered at 15 days and 2 months. Internal consistency was assessed by Cronbach's α coefficients, factorial validity by an exploratory factor analysis and external validity by Mann-Whitney test and Spearman's correlations (ρ), comparing SS-QoL scores with those obtained from established scales. Reliability was assessed by intra-class correlation coefficients (ICC) and responsiveness by standardized effect sizes (ES).
RESULTS: Test-retest and inter-observer reliabilities were excellent (ICC> 0.88). Internal consistency was acceptable (α= 0.65-0.91), except for the Personality domain (α= 0.58). Factor analysis individualized eight homogenous axes. SS-QoL scores were different between groups opposed by their modified Rankin score at enrolment or their overall quality of life compared with pre-stroke status (p < 0.001). Ten of the twelve domains correlated moderately (ρ> 0.35) to strongly (ρ> 0.5) with established measures. Nine domains were mildly to moderately responsive to change (ES> 0.3).
CONCLUSION: The French version of the SS-QoL is a valid, reliable and moderately responsive instrument.
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