Feasibility in France of a Mindfulness-based Group Therapy for Adolescents With Chronic Pain

The primary outcome will be the percentage of adolescents who will attend at least 6 of the 8 sessions.

Percentage of adolescents present at each program session

Percentage of adolescents present at each program session

Percentage of adolescents present at each program session

Percentage of adolescents present at each program session

Percentage of adolescents present at each program session

Percentage of adolescents present at each program session

Percentage of adolescents present at each program session

Percentage of adolescents present at each program session

binary criterion yes/no

binary criterion yes/no

binary criterion yes/no

binary criterion yes/no

binary criterion yes/no

binary criterion yes/no

binary criterion yes/no

binary criterion yes/no

Rate of eligible adolescents who agreed to participate in the study

Daily practice at home (binary criterion yes/no)

Daily practice at home (binary criterion yes/no)

Daily practice at home (binary criterion yes/no)

Daily practice at home (binary criterion yes/no)

Daily practice at home (binary criterion yes/no)

Daily practice at home (binary criterion yes/no)

Daily practice at home (binary criterion yes/no)

Pain level will be assessed using Visual Analog Scale (from 0 "no pain" to 10 "the worst pain possible "). The pain will be measured by the average of the visual analogue rating scales evaluated over the last 8 days.

Pain level will be assessed using Visual Analog Scale (from 0 "no pain" to 10 "the worst pain possible "). The pain will be measured by the average of the visual analogue rating scales evaluated over the last 8 days.

Pain level will be assessed using Visual Analog Scale (from 0 "no pain" to 10 "the worst pain possible "). The pain will be measured by the average of the visual analogue rating scales evaluated over the last 8 days.

Quality of life will be assessed using the french scale VSPA-12 ("Vécu et Santé Perçue de l'adolescent (VSPA) - 12 items", "Lived and Health Perceived in 12 items) which is a self-questionnaire to assess the impact of adolescents health on their everyday life. The 12 items have five possible answers: never, rarely, sometimes, often, always.

Quality of life will be assessed using the french scale VSPA-12 ("Vécu et Santé Perçue de l'adolescent - 12 items", "Lived and Health Perceived in 12 items) which is a self-questionnaire to assess the impact of adolescents health on their everyday life. The 12 items have five possible answers: never, rarely, sometimes, often, always.

Quality of life will be assessed using the french scale VSPA-12 ("Vécu et Santé Perçue de l'adolescent - 12 items", "Lived and Health Perceived in 12 items) which is a self-questionnaire to assess the impact of adolescents health on their everyday life. The 12 items have five possible answers: never, rarely, sometimes, often, always.

Chronic pain acceptance will be assessed using Chronic Pain Acceptance Questionnaire, Adolescent version (CPAQ-A) translated in French. CPAQ-A has 20 items For each item, the answer modalities are: 0= Never True, 1 = Rarely true, 2 = sometimes true, 3 = Often true, 4 = always true.

Chronic pain acceptance will be assessed using CPAQ-A (Chronic Pain Acceptance Questionnaire, Adolescent version) translated in French. CPAQ-A (Questionnaire for acceptance of chronic pain for adolescents) has 20 items For each item, the answer modalities are: 0= Never True, 1 = Rarely true, 2 = sometimes true, 3 = Often true, 4 = always true.

Chronic pain acceptance will be assessed using CPAQ-A (Chronic Pain Acceptance Questionnaire, Adolescent version) translated in French. CPAQ-A (Questionnaire for acceptance of chronic pain for adolescents) has 20 items For each item, the answer modalities are: 0= Never True, 1 = Rarely true, 2 = sometimes true, 3 = Often true, 4 = always true.

Functional disability will be assessed using FDI (Functional Disability Inventory) which is a functional disability scale to assess physical problems or any difficulties that adolescents may have in performing activities of daily living. FDI have 15 items. For each item, the answer modalities are 0 = no trouble, 1 = a little trouble, 2 = some trouble, 3 = a lot of trouble and 4 = impossible. The total FDI score is a sum of all of the items. The FDI score ranges from 0 to 60, with higher score indicating greater functional disability.

Functional disability will be assessed using FDI (Functional Disability Inventory) which is a functional disability scale to assess physical problems or any difficulties that adolescents may have in performing activities of daily living. FDI have 15 items. For each item, the answer modalities are 0 = no trouble, 1 = a little trouble, 2 = some trouble, 3 = a lot of trouble and 4 = impossible. The total FDI score is a sum of all of the items. The FDI score ranges from 0 to 60, with higher score indicating greater functional disability.

Functional disability will be assessed using FDI (Functional Disability Inventory) which is a functional disability scale to assess physical problems or any difficulties that adolescents may have in performing activities of daily living. FDI have 15 items. For each item, the answer modalities are 0 = no trouble, 1 = a little trouble, 2 = some trouble, 3 = a lot of trouble and 4 = impossible. The total FDI score is a sum of all of the items. The FDI score ranges from 0 to 60, with higher score indicating greater functional disability.

The anxiety and depression will be assessed using the french version of the Revised Children's Anxiety and Depression Scale (RCADS) intended to evaluate the symptomatology associated with anxiety disorders and major depression in children. This scale have 29 items. For each item, the possible answers are: never, sometimes, often, always.

The anxiety and depression will be assessed using the french version of the Revised Children's Anxiety and Depression Scale (RCADS) intended to evaluate the symptomatology associated with anxiety disorders and major depression in children. This scale have 29 items. For each item, the possible answers are: never, sometimes, often, always.

The anxiety and depression will be assessed using the french version of the Revised Children's Anxiety and Depression Scale (RCADS) intended to evaluate the symptomatology associated with anxiety disorders and major depression in children. This scale have 29 items. For each item, the possible answers are: never, sometimes, often, always.

Catastrophism will be assessed using PCS-Ado (Pain Catastrophizing Scale for Francophone Adolescents) which identifies the thoughts and emotions that may be associated with the pain. PCS-Ado have 13 items. For each item, the possible answers are: never, rarely, sometimes, often and always.

Catastrophism will be assessed using PCS-Ado (Pain Catastrophizing Scale for Francophone Adolescents) which identifies the thoughts and emotions that may be associated with the pain. PCS-Ado have 13 items. For each item, the possible answers are: never, rarely, sometimes, often and always.

Catastrophism will be assessed using PCS-Ado (Pain Catastrophizing Scale for Francophone Adolescents) which identifies the thoughts and emotions that may be associated with the pain. PCS-Ado have 13 items. For each item, the possible answers are: never, rarely, sometimes, often and always.

Mindfulness acceptance will be assessed using the French version of Five Facets Mindfulness Questionnaire (FFMQ) with 39 items. For each item the possible answers are: 1 = never or very rarely true, 2 = rarely true, 3 = sometimes true, 4 = often true, 5 = very often or always true.

Mindfulness acceptance will be assessed using the French version of Five Facets Mindfulness Questionnaire (FFMQ) with 39 items. For each item the possible answers are: 1 = never or very rarely true, 2 = rarely true, 3 = sometimes true, 4 = often true, 5 = very often or always true.

Mindfulness acceptance will be assessed using the French version of Five Facets Mindfulness Questionnaire (FFMQ) with 39 items. For each item the possible answers are: 1 = never or very rarely true, 2 = rarely true, 3 = sometimes true, 4 = often true, 5 = very often or always true.

Strengths and difficulties will be assessed using the french version of the Strengths and Difficulties Questionnaire (SDQ-Fra) with 25 items. For each item, the possible answers are : not true, a little true, very true. The total difficulty score of the SDQ ranges from 0-40.

Strengths and difficulties will be assessed using the french version of the Strengths and Difficulties Questionnaire (SDQ-Fra) with 25 items. For each item, the possible answers are : not true, a little true, very true. The total difficulty score of the SDQ ranges from 0-40.

Strengths and difficulties will be assessed using the french version of the Strengths and Difficulties Questionnaire (SDQ-Fra) with 25 items. For each item, the possible answers are : not true, a little true, very true. The total difficulty score of the SDQ ranges from 0-40.

Adolescents satisfaction about the mindfulness program will be assessed using a satisfaction questionnaire with 8 items designed for this study. For each item, the modality answers are scored from 1 to 4.

Parents satisfaction about the mindfulness program followed by their children will be assessed using a satisfaction questionnaire with 8 items designed for the study.