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Meta-analysis. (A). Social support. (B) Social participation. (C1) Social participation. (C2). Subgroup analysis of social participation by study design. (C3). Subgroup analysis of social participation by published continents. (D1). Social network. (D2). Subgroup analysis of social network by study design. (E1). Social network. (E2). Subgroup analysis of social network by study design. (E3). Subgroup analysis of social network by published continents.
