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Clinical Trial Details — Status: Enrolling by invitation

Administrative data

NCT number NCT01167556
Other study ID # Grant 100003014
Secondary ID
Status Enrolling by invitation
Phase N/A
First received July 20, 2010
Last updated July 21, 2010
Start date March 2006
Est. completion date February 2011

Study information

Verified date February 2008
Source Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Contact n/a
Is FDA regulated No
Health authority Netherlands: ZonMw, Netherlands Organisation for Health Research and Development
Study type Interventional

Clinical Trial Summary

Cannabis use by people with schizophrenia is associated with family distress and poor clinical outcomes. Therefore, an Family Motivational Intervention (FMI) was developed to help parents to motivate their child with a diagnoses of recent-onset schizophrenia to reduce cannabis use.

In a single-blind randomised clinical trail with 75 patients with the diagnosis of schizophrenia, parents will be assigned to either FMI or to routine care. Assessments will be conducted at baseline and at a 10- and 22-month follow-up. The study hypothesis is that FMI will be more effective than routine care in reducing (a) cannabis use in patients and (b) distress and sense of burden in parents.


Recruitment information / eligibility

Status Enrolling by invitation
Enrollment 147
Est. completion date February 2011
Est. primary completion date August 2010
Accepts healthy volunteers No
Gender Both
Age group 16 Years to 40 Years
Eligibility Inclusion Criteria:

- Clinical diagnosis of schizophrenia or psychotic-related disorder

- Onset of schizophrenia or related disorder within pervious the 10 years

- Cannabis use at least 2 days per week in the 3 months prior to the assessment

- Antipsychotic medication in prescribed or indicated

- At least 10 hours of contact with the parents each week in the last month

Exclusion Criteria:

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Investigator), Primary Purpose: Treatment


Related Conditions & MeSH terms


Intervention

Behavioral:
Family Motivational Intervention
A intervention with provided parents 6 sessions of Interaction Skills training and 6 sessions Motivational Interviewing training.

Locations

Country Name City State
Netherlands Academic Medical Center Amsterdam North Holland

Sponsors (1)

Lead Sponsor Collaborator
Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)

Country where clinical trial is conducted

Netherlands, 

References & Publications (1)

Dekker N, Smeerdijk AM, Wiers RW, Duits JH, van Gelder G, Houben K, Schippers G, Linszen DH, de Haan L. Implicit and explicit affective associations towards cannabis use in patients with recent-onset schizophrenia and healthy controls. Psychol Med. 2010 Aug;40(8):1325-36. doi: 10.1017/S0033291709991814. Epub 2009 Nov 17. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Cannabis use in patients with a diagnosis of recent-onset schizophrenia Baseline (before the start of the intervention) No
Primary Cannabis use in patients with a diagnosis of recent-onset schizophrenia 10-month follow-up (3 months after the intervention has ended) No
Primary Cannabis use in patients with a diagnosis of recent-onset schizophrenia 22-month follow-up (15 months after the intervention has ended) No
Secondary Medication adherence in patients with a diagnosis of recent-onset schizophrenia Baseline (before the start of the intervention) No
Secondary Medication adherence in patients with a diagnosis of recent-onset schizophrenia 10-month follow-up (3 months after the intervention has ended) No
Secondary Medication adherence in patients with a diagnosis of recent-onset schizophrenia 22-month follow-up (15 months after the intervention has ended) No
Secondary Quality of life in patients with recent-onset schizophrenia Baseline (before the start of the intervention) No
Secondary Quality of life in patients with recent-onset schizophrenia 10-month follow-up (3 months after the intervention has ended) No
Secondary Quality of life in patients with recent-onset schizophrenia 22-month follow-up (15 months after the intervention has ended) No
Secondary Stress in parents due to caring for a child with recent-onset schizophrenia Baseline (before the start of the intervention) No
Secondary Stress in parents due to caring for a child with recent-onset schizophrenia 10-month follow-up (3 months after the intervention has ended) No
Secondary Stress in parents due to caring for a child with recent-onset schizophrenia 22-month follow-up (15 months after the intervention has ended) No
Secondary Expressed emotion in parents of patients with recent-onset schizophrenia Baseline (before the start of the intervention) No
Secondary Expressed emotion in parents of patients with recent-onset schizophrenia 10-month follow-up (3 months after the intervention has ended) No
Secondary Expressed emotion in parents of patients with recent-onset schizophrenia 22-month follow-up (15 months after the intervention has ended) No
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