The ADHD controversy project: Long-term effects of ADHD diagnosis

Not Applicable

Completed

• Conditions: Diagnosis of ADHD; Mental and Behavioural Disorders

• Registration Number: ISRCTN11573246
• Lead Sponsor: Haukeland University Hospital

Brief Summary

2021 Protocol article in https://pubmed.ncbi.nlm.nih.gov/33468528/ protocol (added 22/01/2021)

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2020-08-28
• Study Completion: 2021-12-31
• Last Update Posted: 27 February 2024

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 178820

Inclusion Criteria

The patient sample is all persons in Norway between 5 and 18 years of age that were in contact with child and adolescent psychiatric outpatient clinics in 2009-2011 (i.e. birth cohorts 1991-2006). We will also include a control sample that is a random sample from the general population of equal size to the patient sample. The control sample is defined as individuals in Norway between 5-18 years not in contact with child and adolescent psychiatric outpatient clinics (regardless of reason) during the calendar years 2009-2011.

We have four different sample definitions:
1. All patients diagnosed with ADHD in 2009-2011, regardless of referral reason.
2. All patients referred to child and adolescent outpatient clinics from GP’s with suspicion of ADHD in 2009-2011, regardless of whether the patient was diagnosed with ADHD.
3. All patients in contact with child and adolescent outpatient clinics for any reason in 2009-2011, regardless of whether the patient was diagnosed with ADHD.
4. All individuals in child and adolescent outpatient clinics catchment area in 2009-2011

Exclusion Criteria

Does not meet inclusion criteria

Study & Design

• Study Type: Observational
• Study Design: Not specified