Fig. 4
From: Collaboration on evidence synthesis in Africa: a network study of growing research capacity
Intra- and intercontinental collaboration. a Number of various types of collaborative ties. b Indices of integration of the African and non-African research community. Higher values of the E-I index indicate a dominance of collaboration between African and non-African institutions over that among African institutions and among non-African institutions. Higher values of the regionalization index indicate the tendency of African institutions to collaborate more within than outside Africa