The Incredible Years in Norway: treatment of oppositional defiant and conduct problems in young Norwegian children

Treatment of oppositional defiant and conduct problems in young Norwegian children: results of a randomised controlled replication trial

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN10430476

Enrollment

127

Registered

2008-03-10

Start date

2001-09-01

Completion date

Unknown

Last updated

2019-07-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Oppositional defiant disorder and/or conduct disorder Mental and Behavioural Disorders Oppositional defiant disorder

Interventions

The treatment program, IY, was developed by Professor Carolyn Webster-Stratton at the parenting clinic at the University of Washington. IY is a manualised and video-based training program for young ch

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: The child characteristics for inclusion in the study were: 1. The child was 4 - 8 years old, either sex 2. The primary referral reason was misconduct (e.g., noncompliance, aggressive or oppositional behaviours) 3. The child?s behaviour was within the clinical range and above the 90th percentile (a score above 119 for girls and 126 for boys) on Eyberg Child Behaviour Inventory (ECBI) using Norwegian norms 4. The child met diagnostic criteria for oppositional defiant disorder (ODD) and/or conduct disorder (CD) according to standards set by the Diagnostic and Statistical Manual for Mental Disorders 4th edition (DSM-IV) or sub-clinical diagnostic criteria for ODD or CD

Exclusion criteria

Exclusion criteria: The child had no debilitating physical impairment.

Design outcomes

Primary

Measure	Time frame
1. Eyberg Child Behaviour Inventory (ECBI) 2. Kiddie-Schedule for Affective Disorders and Schizophrenia (Kiddie-SADS) Assessments in the active treatment were conducted before treatment and at the end of the treatment interventions (approximately 21 - 24 weeks after the initiation of the intervention), and 12 months after the post-assessments the one-year follow-up was conducted. The WLC was not available at the one-year follow-up.	—

Measure

Time frame

1. Eyberg Child Behaviour Inventory (ECBI) 2. Kiddie-Schedule for Affective Disorders and Schizophrenia (Kiddie-SADS) Assessments in the active treatment were conducted before treatment and at the end of the treatment interventions (approximately 21 - 24 weeks after the initiation of the intervention), and 12 months after the post-assessments the one-year follow-up was conducted. The WLC was not available at the one-year follow-up.

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Secondary

Measure	Time frame
1. Child Behaviour Checklist (CBCL) 2. Teacher Report Form (TFR) 3. Parental Stress Index (PSI) Assessments in the active treatment were conducted before treatment and at the end of the treatment interventions (approximately 21 - 24 weeks after the initiation of the intervention), and 12 months after the post-assessments the one-year follow-up was conducted. The WLC was not available at the one-year follow-up.	—

Measure

Time frame

1. Child Behaviour Checklist (CBCL) 2. Teacher Report Form (TFR) 3. Parental Stress Index (PSI) Assessments in the active treatment were conducted before treatment and at the end of the treatment interventions (approximately 21 - 24 weeks after the initiation of the intervention), and 12 months after the post-assessments the one-year follow-up was conducted. The WLC was not available at the one-year follow-up.

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Countries

Norway

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026