The Validation Process for Confirmation of the French Version of the Pediatric Quality of Life Inventory :PedsQLTM.

Study Overview
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Brief Summary
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There isn't specific Health related quality of life measure for children with DMD in French. The aim of this study is to validate the French version of the Pediatric Quality of Life Inventory 3.0 Duchenne Muscular Dystrophy module with a multicentric study. The investigators will evaluate the following psychometric properties : convergent validity, internal validity, inter-rater reliability. The investigators would like to be able to use this scientific tool in future clinical trials.

Detailed Description
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The Duchenne Muscular Dystrophy, the commonest form of dystrophy, is an X-linked, recessive neuromuscular disease, in which there is an absence of the protein dystrophin. This chronic and progressive disease leads to an inevitable loss of autonomy (muscle weakness, respiratory and cardiac failure). With better multidisciplinary care, life expectancy has increased but also morbidity. From now one, the evaluation of the quality of life of children with DMD is necessary in therapeutic trials. Given the specificities of the disease, it seems appropriate to have a specific scale. In the literature there isn't quality of life scale specific to Duchenne Muscular Dystrophy in French version. The only specific scale that exists is the specific module PedsQLTM DMD that was validated in English version in 2012. This scale is relevant for assessing the quality of life in clinical trials and in daily clinical practice given its psychometric properties (good internal consistency close to 0.8).The main hypothesis that we formulate is to validate the French translation of the pediatric module of Duchenne Muscular Dystrophy of the PedsQL ™ 3.0 scale.

Official Title
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The Validation Process for Confirmation of the French Version of the Pediatric Quality of Life Inventory (PedsQLTM) 3.0 Duchenne Muscular Dystrophy Module.

Conditions
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Duchenne Muscular Dystrophy

Intervention / Treatment
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* Other: Duchenne Muscular Dystrophy of the PedsQL ™ 3.0 scale
* Other: The following data of motor function


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Boys aged 7 to 18, with genomic Duchenne muscular dystrophy whose parents (mother and / or father) or direct grandparents do not oppose. Exclusion Criteria: Inability for the child to understand the issues Absence of direct parents or grandparents Child receiving antidepressant treatment Non French speaking child Duchenne Muscular Dystrophy girls

Ages Eligible for Study
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Minimum Age: 5 Years
Maximum Age: 18 Years

Sexes Eligible for Study
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Male

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Boys with Muscular Duchenne Dystrophy<br>105 boys with Muscular Duchenne Dystrophy (DMD) distributed as follows: 35 patients with Duchenne muscular dystrophy by age category, 8-12 years old and 13-18 years old. Children will complete the questionnaire of Duchenne Muscular Dystrophy of the PedsQL ™ 3.0 scale regardless of his parents | Other: Duchenne Muscular Dystrophy of the PedsQL ™ 3.0 scale<br>* Scaling in multidisciplinary consultations in the form of a self-administered questionnaire with the help of a third party (psychologist). The child and his / her parent complete the questionnaire independently. The result of the questionnaire will then be scored. To validate the French translation of the pediatric module of Duchenne Muscular Dystrophy of the PedsQL ™ 3.0 scale. The validation process is confirmatory, the scale being widely used in English. The scale will measure the quality of life of the child using two independent assessments : children and their parents.<br>Other: The following data of motor function<br>* In parallel, the following data are collected on the day of the consultation: assessment of motor function (MFM, use of a wheelchair, age of loss of walking); assessment of respiratory function (EFR, FVC, respiratory assistance, type of respiratory aid); evaluation of cardiac function (FE); assessment of nutritional status (weight, height, BMI, nutritional support by gastrostomy), school status; ongoing drug treatments (corticosteroids, IEC).<br>|
| Parents of boys with Muscular Duchenne Dystrophy<br>105 parents of boys with Muscular Duchenne Dystrophy For the 5-7 age group, only parents answer the questionnaire but medical data are collected : 35 by age category (5-7; 8-12; 13-18) Parents will complete the questionnaire of Duchenne Muscular Dystrophy of the PedsQL ™ 3.0 scale regardless of their children | Other: Duchenne Muscular Dystrophy of the PedsQL ™ 3.0 scale<br>* Scaling in multidisciplinary consultations in the form of a self-administered questionnaire with the help of a third party (psychologist). The child and his / her parent complete the questionnaire independently. The result of the questionnaire will then be scored. To validate the French translation of the pediatric module of Duchenne Muscular Dystrophy of the PedsQL ™ 3.0 scale. The validation process is confirmatory, the scale being widely used in English. The scale will measure the quality of life of the child using two independent assessments : children and their parents.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Evaluate the validity of the French version of the DMD module of the PedsQLTM 3.0 scale | The validation process is confirmatory, the scale being widely used in English 201/5000 The internal consistency of the 4 dimensions of the PedsQL ™ DMD module will be evaluated by measuring the Cronbach Alpha. In terms of data availability to children (activity report). the validation of the DMD module will focus on the validity of constructs, internal structure validity, discriminant validity and reliability | 12 months | 
| Evaluate the reliability of the French version of the DMD module of the PedsQLTM 3.0 scale | PedsQLTM is a model for measuring quality of life in children with acute or chronic pathology. Pathology-specific PedsQL ™ provides a better assessment of the quality of life of this population | 12 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Duchenne Muscular Dystrophy,, Pediatric Quality of Life Inventory, disability paradox