Using social network analysis for assessing mental health and social services inter-organisational collaboration: findings in deprived areas in Brussels and London.

Fragmentation in mental health and social care delivery should be addressed at the system level. A Social Network Analysis was carried out on relations between services in order to assess Leutz's levels of care integration: linkage, coordination, and full integration. Findings for deprived areas in Brussels and London show that linkage across clusters of services is weak in both networks. However, the integration of care relies on the level of linkage in London, while in Brussels it is more dependent on central services playing brokerage roles. The method offers a useful and complementary basis for evaluating the integration of care.