Table 1 Criteria for the four mutually exclusive severity groups of parental mental health conditions

Minor mental health conditions

At least one of the criteria fulfilled:

Medication^a- At least two redeemed prescriptions of:

--Anxiolytic medication (ATC: N03AE, N05BA, N05CD, N05CF)

--Antidepressant medication (ATC: N06AB, N06AX)

Services at general practitioners (GP)^b

--At least two sessions of ‘talk therapy’

--At least two psychometric tests

Other services^b

--At least one contact to a private psychologist

Additional criteria (all fulfilled)

--No contacts or diagnoses from psychiatric hospital

--No records of contact to a private psychiatrist

Moderate mental health conditions

At least one of the criteria fulfilled:

Psychiatric hospital^c

--Psychiatric diagnosis (ICD-10: Mental and behavioural disorders F00-99) registered at psychiatric hospital (both in- and outpatient contacts)—excluding the diagnoses defining the following severity group of severe mental health conditions

Other services^b

--At least one contact to a private psychiatrist

Severe mental health conditions

At least one of the criteria fulfilled:

Psychiatric hospital^c

--Both in- and outpatient contact with a registered diagnosis of either schizophrenia (ICD-10: F20-22) or bipolar disease (ICD-10: F30-31)

--Inpatient contact with a registered diagnosis of either unipolar depression (ICD-10: F32-34) or emotionally unstable personality disorder (ICD-10: F60.3)

No mental health conditions

None of the above