Epidemiology & monitoring projects


Implementation specialists, researchers, and policymakers at the Trimbos Institute work on a variety of monitoring projects. These projects include large and small scale epidemiological research, national monitoring studies, and participation in international monitoring and epidemiological efforts.

Drugs Information and Monitoring System (DIMS)

DIMS is a national network of testing facilities that furthermore aims at gaining an insight into the market of controlled substances. DIMS is embedded within the Trimbos Institute and is funded by the Ministry of Health (VWS).

For more information, contact Raymond Niesink


Dutch National School Survey

The Dutch National School Survey is a national research effort regarding the use of tobacco, alcohol, drugs, and the internet among adolescents. The Trimbos Institute conducts this research in collaboration with the University of Utrecht.

For more information, contact Karin Monshouwer


European School Survey Project on Alcohol and Other Drugs

Conducted every four years, the European School Survey Project on Alcohol and Other Drugs (ESPAD) is a collaborative effort of independent research teams in more than forty European countries.

For more information, contact Karin Monshouwer


Health Behavior in School-aged Children

The Health Behavior in School-aged Children (HBSC) survey collects data every four years on 11-, 13- and 15-year-old boys' and girls' health and well-being, social environments, and health behaviors. HBSC includes 44 countries and regions across Europe and North America.

For more information, contact Saskia van Dorsselaer


Monitor Drug-related Incidents (MDI)

The Monitor Drug-related Incidents (MDI) is a Dutch monitoring system of the Trimbos-institute, initiated in 2009. It collects information on presentations with drug-related acute toxicities at four medical services, in eight regions of the Netherlands to provide an indicative base for monitoring.

For more information, contact Esther Croes


Monitoring deinstitutionalization and mental healthcare system reform

In 2015, the Trimbos Institute began the Reforming the long-term Mental Health Sector project. The monitor was commissioned by the Ministry of Health, Welfare, and Sports.


Monitoring the living arrangements for those with dementia

The Trimbos Institute conducts research to understand the living arrangements of those with dementia.

For more information, contact Bernadette Willemse


Monitor of New Drugs

The Monitor of New Drugs (MND) assesses the presence of new (mostly unregulated) psychoactive substances in the DIMS system, along with data from the National Forensic Institute and the Customs Laboratory.

For more information, contact Raymond Niesink


National Drug Monitor

The National Drug Monitor (NDM) is the core publication of drug monitoring in the Netherlands.

For more information, contact Margriet van Laar


National Focal Point

The Netherlands REITOX National Focal Point for the EU drugs agency EMCDDA is based in the Drug Monitoring & Policy Program at the Trimbos Institute.

For more information, contact Margriet van Laar


NEMESIS-2 study

The Trimbos Institute is involved in large scale, longitudinal research monitoring the mental health of the Dutch population between the ages 18 to 64 years old as part of the Netherlands Mental Health Survey and Incidence Study (NEMESIS-2).

For more information, contact Margreet ten Have


THC Monitor

Many of the cannabis products sold in these coffee shops originate from Dutch-grown marijuana, known in Dutch as 'nederwiet'. On behalf of the Ministry of Health, Welfare, and Sport, the THC Monitor investigates the potency of cannabis products sold in coffee shops in the Netherlands.

For more information, contact Sander Rigter


WMH (World Mental Health)-WHO survey initiative

The WMH (World Mental Health)-WHO survey initiative is a project of the Assessment, Classification, and Epidemiology (ACE) Group at the World Health Organization.

For more information, contact Margreet ten Have