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Pharmacopsychiatry 2013; 46(01): 23-28
DOI: 10.1055/s-0032-1314806
Original Paper
© Georg Thieme Verlag KG Stuttgart · New York

High Rate of Non-Eligibility: Methodological Factors Impacting on Recruitment for a Multicentre, Double-Blind Study of Paediatric Patients with Major Depressive Disorder

L. Bliznak
1   Department of Child and Adolescent Psychiatry and Psychotherapy, Research Unit for Paediatric Psychopharmacology, Central Institute of Mental Health, Mannheim, Germany
,
R. Berg
1   Department of Child and Adolescent Psychiatry and Psychotherapy, Research Unit for Paediatric Psychopharmacology, Central Institute of Mental Health, Mannheim, Germany
,
A. Häge
1   Department of Child and Adolescent Psychiatry and Psychotherapy, Research Unit for Paediatric Psychopharmacology, Central Institute of Mental Health, Mannheim, Germany
,
R. W. Dittmann
2   Eli Lilly Endowed Chair of Paediatric Psychopharmacology, Central Institute of Mental Health, Mannheim, Germany
› Author Affiliations
Further Information

Publication History

received 06 September 2011
revised 22 March 2012

accepted 03 May 2012

Publication Date:
14 June 2012 (online)

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Abstract

Introduction:

This report describes difficulties encountered when attempting to recruit children and adolescents with major depression for a recent international double-blind, placebo-controlled trial (www.clinicaltrials.gov Nr. NCT00849901).

Methods:

Over a 14-month period, children and adolescents with depressive symptoms were pre-screened for their eligibility for inclusion.

Results:

85 patients (age 7–17 years) were considered. Of these, only one was enrolled. The main reasons for non-eligibility were: failure to meet the baseline severity criterion on the primary outcome scale (Clinical Global Impression – Severity; 32.1% of the patients); requirement for immediate hospitalisation (15.4%); or the presence of an exclusionary comorbid psychiatric disorder (19.1%).

Discussion:

The recruitment of paediatric patients with major depression was primarily limited by various inclusion and exclusion criteria. Slow recruitment of small patient samples may impact strongly on the representativeness and generalisability of research findings, and thus on analyses in evidence-based medicine and on the development and recommendations of treatment guidelines. This may impact in turn on the feasibility of the clinical development and registration process of new compounds in paediatric psychopharmacology and beyond.

Key words

recruitment - eligibility - major depression - paediatric patients
 

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