Abstract
Objectives
To translate and validate French versions of two health‐related quality of life questionnaires for patients with peripheral facial palsy: Facial Disability Index (FDI) and Facial Clinimetric Evaluation (FaCE) scale.
Design
Prospective cohort study.
Setting
University tertiary referral center.
Participants
A pilot test was performed on 10 subjects (5 patients with facial palsy of more than 1‐month duration and 5 normal subjects), then 67 adult patients with facial palsy were enrolled in the validation study.
Main outcome measures
Translation of the original questionnaires has followed international guidelines using a forward‐backward translation method. A pilot test and a validation study based on the translated questionnaires were performed. Internal consistency, test–retest reliability, validity and responsiveness were assessed. Validity was assessed by comparing to SF‐36 and Sunnybrook/House‐Brackmann grading systems. Subjects answered scales twice within a one‐week interval.
Results
67 patients were enrolled, among which 63 completed scales one week later (retest). For physical and social functions of FDI and FaCE scores, Cronbach's α representing internal consistency were 0.88, 0.70 and 0.89, and test–retest reliability by intra‐class correlation coefficients were 0.81, 0.86 and 0.89 respectively. The correlation of facial movement score of FaCE scale was good with Sunnybrook/House‐Brackmann grading systems (0.73 and ‐0.75, p<0.01). The correlation of social function of FaCE scale was excellent with social function of SF‐36 (0.8, p<0.01).
Conclusions
French versions of FDI and FaCE scale are psychometrically valid. Both questionnaires can be used for clinical studies to assess the quality of life of patients with peripheral facial palsy.
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