Intellectual and physical activities, but not social activities, are associated with better global cognition: a multi-site evaluation of the cognition and lifestyle activity study for seniors in Asia (CLASSA)

Wang H, Lam LC, Ong PA, Dikot Y, Natividad B, Yusoff S, Fu JL, Fung AW, Lai K, Senanarong V

Age Ageing. 2015 Sep;44(5):835-40. doi: 10.1093/ageing/afv099. Epub 2015 Aug 12.