RESULTS	At 6-month follow-up , there were no significant effects on well-being ( MHC-SF : Cohen 's d = 0.01 , P = .90 ; WHO-5 : Cohen 's d = 0.26 , P = .11 ) , whereas depressive symptoms ( Cohen 's d = 0.35 , P = .02 ) and anxiety symptoms ( Cohen 's d = 0.35 , P = .001 ) were still significantly reduced compared to the control group .\