Diagnostic validity of early-onset obsessive-compulsive disorder in the Danish Psychiatric Central Register: findings from a cohort sample.

Objectives: Employing national registers for research purposes depends on a high diagnostic validity. The aim of the present study was to examine the diagnostic validity of recorded diagnoses of early-onset obsessive-compulsive disorder (OCD) in the Danish Psychiatric Central Register (DPCR).

Design: Review of patient journals selected randomly through the DPCR.

The effects of long-term medication on growth in children and adolescents with ADHD: an observational study of a large cohort of real-life patients.

Background: Children and adolescents with ADHD treated with central stimulants (CS) often have growth deficits, but the implications of such treatment for final height and stature remain unclear.

Methods: Weight and height were assessed multiple times in 410 children and adolescents during long-term treatment with CS, which lasted between 0.9 and 16.

Long-term treatment of ADHD with stimulants: a large observational study of real-life patients.

Objective: To evaluate 410 real-life patients treated with stimulants and assessed systematically over several years.

Method: Naturalistic observational study. A database was compiled on the basis of a review of the medical charts of patients attending a specialized ADHD clinic.