Evaluation of the French version of the 4-item index of the Acne-QoL (AcneQ4fr)
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Abstract
Background
The 4-item index of the 19-item Acne-Quality of Life (Acne-QoL) has been validated in English (AcneQ4). French translation and linguistic validation of the Acne-QoL have recently been completed (Acne-QoLfr).
Purpose
This study sought to evaluate reliability and responsivity of the French version of the AcneQ4 (AcneQ4fr).
Methods
Calculation of intraclass correlation coefficients (ICC) and regression modeling was performed to evaluate reliability (comparing Day 0 to Day 2–3 responses) and responsivity (comparing Day 0 to Day 60+ responses).
Results
Thirty-four native French-speaking acne subjects in Quebec, Canada (n = 20) and France (n = 14) completed the Acne-QoLfr on 3 occasions over 3 months (Day 0, Day 2–3, and Day 60+). Of 14 completed responses for Day 0 and Day 2–3, ICC for AcneQ4fr was 0.73 (with 95 % confidence interval (0.348, 0.905) and P value 0.001), and mean score difference was 0.85 (range of possible scores for AcneQ4fr: 0–24; P = 0.41). Of 19 completed responses for Day 0 and Day 60+, ICC for Acne-Q4fr was 0.45 (with 95 % confidence interval (0.046, 0.728) and P value 0.015) and mean score difference was 4.14 (P = 0.001).
Conclusions
The abbreviated AcneQ4fr is somewhat reflective of the entire Acne-QoLfr and by its brevity may facilitate psychometric evaluation of francophone acne patients in routine practice.
Keywords
Acne Acne-QoL Health-related quality of life Quality of life Questionnaires French translation Reliability ResponsivityAbbreviations
- ICC
Intraclass correlation coefficient
- Acne-QoL
Acne-Quality of Life
- Acne-QoLfr
French translation of Acne-QoL
- AcneQ4
4-item index Acne-QoL
- AcneQ4fr
French version of the AcneQ4
Notes
Conflict of interest
Dr. Tan is an advisory board member, speaker, consultant, and/or investigator for Berlex, Bayer, Cipher, Dermik, Galderma, Photocure, and Stiefel/GSK. Dr. Poulin has been an investigator for Photocure and Galderma. Dr. Dreno is an advisory board member, speaker, consultant, and/or investigator for Galderma, Roche Posay, Intendis, Fabre, Labcatal. Ms. O’Toole and Mr. Zhang have no conflicts to declare.
References
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