Self-help Online against Suicidal Thoughts

In the Self-help Online against Suicide thoughts (SOS-project) we investigated the effectiveness of a semi-guided Internet-based self-help program, which aimed to reduce suicidal thoughts.
A total of 402 people with suicide thoughts were recruited over a two-year period and the results will be published in 2020. The project is funded by TrygFonden and carried out in collaboration with the Danish Lifeline.

DRISP: Charlotte Mühlmann, Trine Madsen, Annette Erlangsen, Merete Nordentoft


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Managing suicidality in research on internet- and mobile-based interventions: current practice and recommendations

Many studies on internet-based therapy exclude participants with suicide thoughts. The aim of two studies is to provide an overview of the current practice in the management of suicidality in RCTs of internet interventions for depression and suicide thoughts. Researchers in the field have been found through a literature review and been asked to answer a questionnaire and be interviewed regarding their practices. Based on this overview, best-practice recommendations regarding how to manage suicidality in research on internet interventions for depression was published in 2020.

For more information read

DRISP: Charlotte Mühlmann


  • Institute of Psychology, University of Freiburg
  • Orygen, the National Centre of Excellence in Youth Mental Health

Suicide rates in Nordic prisons 1999-2016

International research has shown an increased suicide rate among people in prison.  However, studies have yet to address age structural differences. In this longitudinal the suicide rates among male prisoners is compared to the general population in three Nordic countries, Denmark, Iceland, and Norway,  while adjusting for age differences.

Findings from the study shows that men in prison have a 7-fold higher suicide rate compared to the background population in Denmark, Iceland, and Norway and when accounting for age differences. For females, a rate 18-fold higher suicide rate was found among those in prison when compared to the general population. Over the 17-year study period, the suicide rate of people in prison decreased from 129 per 100,000 in 1999 to 70 per 100,000 in 2016. This decline was steeper that the decline observed for the suicide rate in the general population in the Nordic countries.

Link to study

DRISP: Britt Morthorst, Charlotte Mühlmann, Trine Madsen, Merete Nordentoft
og Annette Erlangsen


  • Lars Mehlum, Professor, National Centre for Suicide Research and Prevention, Institute of Clinical Medicine Oslo, Norway
  • Aiguröur Pàlsson, MD, Unit of Forensic Psychiatry, Iceland
  • Högni Óskarsson, md, Humus inc., Iceland Yngve Hammerlin, MD, Correctional Service of Norway Staff Academy, Norway

Call volume to a national suicide hotline, the Lifeline

It is estimated that between 50-60% of callers to suicide hotlines might be in an acute crisis and as many as 56% have reported to have had a previous suicide attempt. It is, thus, important to answer these calls. In Denmark, the Lifeline answers >14,000 calls on a yearly basis but many calls remain unanswered. The aim of this research project is to examine how many calls to the Lifeline are answered as well as to determine peak call hours during the day.

The project has received support from the Partnership for Suicide Prevention, Danish Health Authority

DRISP: Annette Erlangsen


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