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Comparative Study
. 2009 Jan;194(1):73-9.
doi: 10.1192/bjp.bp.107.048322.

Repetition of acute poisoning in Oslo: 1-year prospective study

Fridtjof Heyerdahl  1 , Mari Asphjell Bjornaas, Rune Dahl, Knut Erik Hovda, Anne Kathrine Nore, Oivind Ekeberg, Dag Jacobsen
Affiliations
Comparative Study

Repetition of acute poisoning in Oslo: 1-year prospective study

Fridtjof Heyerdahl et al. Br J Psychiatry. 2009 Jan.

Erratum in

  • Br J Psychiatry. 2009 Feb;194(2):191

Abstract

Background: The repetition of acute poisoning occurs frequently. The intention may change between episodes and many poisonings are treated outside the hospital setting. Few studies have taken this into account.

Aims: To quantify the repetition frequency regardless of the level of health care or the intention behind the poisoning, and to identify possible risk factors for repetition.

Method: A prospective multicentre study of all acute poisonings in Oslo treated in hospital, at an out-patient clinic or by the ambulance service. Repetition was estimated using Kaplan-Meier calculations, and predictive factors were identified using Cox regression analysis.

Results: The estimated 1-year repetition rate was 30% (95% CI 24-35). Independent predictors of repetition were middle age (30-49 years), poisoning with opiates or sedatives, unemployment or living on social welfare, a previous suicide attempt, and a history of psychiatric treatment. Intention was not a significant predictor.

Conclusions: Repetition of acute poisoning is high, irrespective of the level of healthcare and the intention behind the poisoning.

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