The general objective of PolyAGE is to explore the life experience of familial caregivers of aging persons with polyhandicap (>= 35 years). The investigators will question parents (objective 1) and siblings (objective 2) about the experiences, the social representations, the needs and the expectations, as well as the mechanisms associated with their choices about their children with polyhandicap. The objective 3 is to co-analyze parents' and siblings' experiences regarding the aging of their relatives with polyhandicap.

Context Polyhandicap as a chronic complex disability condition, lead to a combination of profound intellectual disability and serious motor deficit, resulting in the extreme restriction of autonomy and communication. Due to the improvement of preventive actions and supportive care, the life expectancy of these persons is increased In order to assess the issues associated with the aging of people with polyhandicap (an emerging and underexplored phenomenon), life experiences, social representations, specific needs and expectations of familial caregivers (parents and siblings) need to be explored. It is essential to better understand these phenomenon in order to better support and assist these families. The PolyAGE project relies on an interdisciplinary approach, based on social and human sciences (social psychology of health) and public health. PolyAGE is based on a solid network including engaged and volunteer actors.

Objectives The general objective of PolyAGE is to explore the life experience of familial caregivers of aging persons with polyhandicap (>= 35 years). The investigators will question parents (objective 1) and siblings (objective 2) about the experiences, the social representations, the needs and the expectations, as well as the mechanisms associated with their choices about their children with polyhandicap. The objective 3 is to co-analyze parents' and siblings' experiences regarding the aging of their relatives with polyhandicap.

Methods

PolyAGE relies on the EVAL-PLH cohort, initiated in 2015, including persons with polyhandicap, familial and institutional caregivers. Eight teams are involved in PolyAGE: 2 specialized reeducation centers (Hendaye et San Salvadour), the J. Bost Foundation, the Groupe Polyhandicap France (family association), 3 university teams (CeReSS and LPS of Aix Marseille university and SantESiH of Montpellier university), 1 epidemiology team (AP-HM).The investigators propose a pluri-methodological mixt approach combining quantitative and qualitative approaches in a socio-contextual and comprehensive perspective:

1. Quantitative approach:

   • Evaluations using standardized self-reported questionnaires: quality of life, coping, emotional intelligence, burden.
   • Parents: data already available (EVAL-PLH cohort: 2 evaluation times 20151-6 and 2020-21).
   • Siblings: data to be collected (phone, mail).

2. Qualitative approach:

   • Evaluations based on interviews (parents and siblings; 1 confounding factor: participant's sex);
   • Combination of interviews content and interpretative phenomenological analysis.

3. Methodological triangulation:

   • Crossing and confrontation of quantitative and qualitative findings. Perspectives
   • Improvement of knowledge and identification of the specific needs/expectations of family caregivers of aging persons with polyhandicap.
   • Understanding the underlying reasons behind the choices made by families in terms of support for aging persons with polyhandicap in order to support the transitions related to the joint aging of persons with polyhandicap and their relatives.
   • Better supporting families in the aging transition (health professionals, health-decision makers).

Inclusion Criteria:

• Mother or father (>=18 years) of a with severe polyhandicap aged 35 and over at the time of inclusion
• Person (>=18 years) having at least one parent in common with a person with a severe polyhandicap aged 35 and over at the time of inclusion
• Person agreeing to participate after having been informed of the study's objectives and procedures

Exclusion Criteria:

• Parents and siblings whose inclusion criteria concerning the Persons with severe polyhandicap are not fulfilled
• Parents and siblings who refuse to participate

Persons with severe polyhandicap aged 35 and over. Severe polyhandicap was defined according to the following criteria:

• presence of a brain lesion that occurred before the age of 3,
• IQ below 40 or not assessable,
• motor handicap: para/tetraparesis or hemiparesis,
• Gross Motor Function Classification System score of III, IV or V,
• Functional Independence Measure score below 55