There was no evidence of impact on primary outcomes : healthy eating ( relative risk [ RR ] 1.04 , 95 % CI 0.93 to 1.17 ) ; physical activity ( RR :1.01 , 95 % CI 0.88 to 1.16 ) ; abnormal GHQ12 ( RR :1.15 , 95 % CI 0.84 to 1.61 ) ; WEMWBS ( mean difference [ MD ] : -1.52 , 95 % CI -3.93 to 0.88 ) .