Postcards in Persia: A Twelve to Twenty-four Month Follow-up of a Randomized Controlled Trial for Hospital-Treated Deliberate Self-Poisoning

Arch Suicide Res. 2017 Jan 2;21(1):138-154. doi: 10.1080/13811118.2015.1004473. Epub 2015 Mar 16.

Abstract

This study reports the outcomes, during follow-up, of a low-cost postcard intervention in a Randomized Control Trial of hospital-treated self-poisoning (n = 2300). The intervention was 9 postcards over 12 months (plus usual treatment) versus usual treatment. Three binary endpoints at 12-24 months (n = 2001) were: any suicidal ideation, suicide attempt, or self-cutting. There was a significant reduction in any suicidal ideation (RRR 0.20 CI 95% 0.13-0.27), (NNT 8, 6-13), and any suicide attempt (RRR 0.31, 0.06-0.50), (NNT 35, 19-195), in this non-western population. However, there was no effect on self-cutting (RRR -0.01, -1.05-0.51). Sustained, brief contact by mail may reduce some forms of suicidal behavior in self-poisoning patients during the post intervention phase.

Keywords: deliberate self-harm; follow-up studies; poisoning; postcards; reminder systems; suicide.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adolescent
  • Adult
  • Aftercare / methods*
  • Female
  • Follow-Up Studies
  • Humans
  • Iran
  • Male
  • Poisoning / psychology
  • Poisoning / therapy*
  • Postcards as Topic*
  • Self-Injurious Behavior / psychology
  • Self-Injurious Behavior / therapy*
  • Suicidal Ideation*
  • Suicide / psychology
  • Suicide, Attempted / psychology*
  • Young Adult