Table 1.

Overview of the ACE definitions operationalized from the Young HUNT 3 study.

Type of ACE	ACE definitions from the Young HUNT 3 study
Abuse
Sexual Abuse	An adult or someone about their age had put the adolescent in sexually uncomfortable/abusive situations.
Physical Abuse	The adolescent was violently hurt, threatened or physically harassed.
Emotional Abuse	The adolescent felt useless at times, was uncomfortable in their own family and experienced much arguing in their family.
Neglect
Emotional Neglect	The adolescents felt no support in their family, felt often lonely and described their relationship with immediate family as bad.
Physical Neglect	The adolescents had almost no outside school activities, ate only 1 meal or less a day and had been drinking alcohol/been intoxicated.
Household dysfunction
Parental substance abuse	At least one of the parents of the adolescent had an alcohol problem.
Parental mental illness	At least one of the parents of the adolescent had mental health problems.
Divorced parents	The parents of the adolescent were separated, divorced, or lived separately for more than one year.
Economic difficulties	The adolescent experienced the financial situation of their family, as worse compared to most others.
Witnessed violence	The adolescent had seen others being violently hurt.