One of the interests of the Alzheimer Plan 2008-2010 is to provide increase support to helping families. It's also of major to involve the patient in the most active treatment possible, encouraging social inter relationship as well as cognitive and behavioural stimulation activities.

In the frame of non drug related approaches to Alzheimer disease (AD), several research projects and actions have already been conducted, but no specific study concerning the efficiency of different types of respite care structures have been conducted so far in France. The present project concerns the thematic of the frame "Development and diversification of respite care structures".

A platform is defined in the Alzheimer Plan as a "diversified range of despite structures according to patients' needs and informal caregivers' expectations" providing several objectives:

Two objectives targeting the informal caregivers:

• offer spare time or tutored
• inform, support and accompany

Two objectives targeting the patients:

• encourage maintain of the patient social life and relationships and work together towards his/her psychological and emotional well-being
• contribute to improve functional cognitive and sensory capacities

The study COMPARSE suggests to compare for the patient - informal caregiver couple, the impact of three different groups of patient care on health profit; resit platform (P), the day care group (D), the control group without access to a respite structure (C).

Inclusion criteria

• patient affect by Alzheimer disease or related pathology
• patient with an informal caregiver
• patient not using any respite structure
• signed informed consent (patient and informal caregiver)
• affiliate to social security

Exclusion criteria

• patient without informal caregiver
• patient include in another clinical protocol

Exclusion Criteria:

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