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Monitoring: basis for policy

Monitoring provides factual and current information in the fields of mental health care, mental resilience and addiction. This to support the policy making of government, parliament, national and local policymakers and professionals. Our knowledge is also available to the general public.

Projects and other activities: 

  • NDM - National Drug Monitor
    Annual overview of current facts and figures on the use of drugs, alcohol and tobacco in the Netherlands.
  • DIMS - Drug Information and Monitoring System
    Monitors the market for recreational drugs in the Netherlands, analyses drug composition, observes trends and warns for public health risks.
  • Dutch National School Survey on substance use
    Four-yearly survey on smoking, drinking, drug use and gambling among Dutch school-goers aged 10 to 18.
  • HBSC Study - Health Behaviour in School-aged Children
    Four-yearly survey on health awareness, mental health, social integration and risk behaviour. Part of an international study.
  • MEMO – National Monitor of Elderly Mental Health Care
    Annual overview of quality and effectiveness of mental health care for older people.
    Long-term study into the mental health and well-being of the Dutch population.


The second Netherlands Mental Health Survey and Incidence Study (NEMESIS-2) is a national study about the mental health status of the Dutch general population. It includes 6.646 respondents aged 18-64 years. The first wave was conducted between November 2007 and July 2009. The second wave 3 years later. Lifetime and 12-month DSM-IV mood, anxiety, substance use and impulse-control disorders were measured.
Amongst others, prevalence of mental disorders, service use because of mental problems and work loss days associated with commonly occurring mental and physical disorders, were studied.
The new data of the second (and intended third) wave of the study makes it possible to study the incidence and course of mental disorders in the Dutch general population.

Evaluation drug policy

In the summer of 2009, the Trimbos Institute and the WODC (Research and Documentation Centre of the Ministry of Justice) presented the Evaluation of the Dutch National Drug Policy. This evaluation of thirty years of Dutch drug policy was commissioned by the ministers of Health, Welfare and Sport (VWS), Justice, and the Interior, and is based on existing information sources like the National Drug Monitor that has been published annually since 1999. 

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