Psychosocial interventions for prevention of depression in older people

1. To assess the effectiveness of psychosocial interventions in primary prevention of depressive symptoms and unipolar depressive disorders in people over the age of 65.

2. The secondary objective is to separately assess the effectiveness of different forms of preventive interventions that have an impact on the social capital (i.e. social network, social support, trust, social participation) of participants.

This is a protocol.