The sum of all items forms the Total problem scale score. (academic.oup.com)
We estimated five different statistical models: one for each of the three conduct disorder scales, one for the lifetime conduct problems scale, and one for the composite index of antisocial behavior. (behavioralandbrainfunctions.biomedcentral.com)
An example question of the Attention Problems scale is «Can't concentrate, can't pay attention for long». (journals.plos.org)