The CST group exhibited greater improvements in psychological QoL compared with controls ( p = @ ) , including less depression ( Cohen d = @ -LSB- @ % confidence interval , or CI = @-@ @ -RSB- ) and anxiety ( d = @ -LSB- @ % CI = @-@ @ -RSB- ) , and better overall mental health ( d = @ -LSB- @ % CI = @-@ @ -RSB- ) , emotional role functioning ( d = @ -LSB- @ % CI = @-@ @ -RSB- ) , vitality ( d = @ -LSB- @ % CI = @ , @ -RSB- ) , and social functioning ( d = @ -LSB- @ % CI = @-@ @ -RSB- ) .