In addition , the intervention group had a lower incidence of consuming caffeine-containing energy drinks ( adjusted odds ratio : @ -LSB- @ % CI : @ to @ -RSB- ) and had better behavioral ( mean difference : -@ -LSB- @ % CI : -@ to -@ -RSB- ; Cohen 's d = @ ) and mental health ( mean difference : -@ -LSB- @ % CI : -@ to -@ -RSB- ; Cohen 's d = @ ) outcomes .