There was no evidence of impact on primary outcomes : healthy eating ( relative risk -LSB- RR -RSB- @ , @ % CI @ to @ ) ; physical activity ( RR :@ , @ % CI @ to @ ) ; abnormal GHQ@ ( RR :@ , @ % CI @ to @ ) ; WEMWBS ( mean difference -LSB- MD -RSB- : -@ , @ % CI -@ to @ ) .