• Bibtex: @carter2007
  • Bibliography: Carter, G. L., Clover, K., Whyte, I. M., Dawson, A. H., & D’Este, C. (2007). Postcards from the EDge: 24-month outcomes of a randomised controlled trial for hospital-treated self-poisoning. The British Journal of Psychiatry, 191(6), 548–553. https://doi.org/10.1192/bjp.bp.107.038406

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BackgroundRepetition of self-poisoning is common.AimsTo report the 24-month outcomes of a non-obligatory postcard intervention (plus treatment as usual) compared with treatment as usual.MethodIn a randomised-controlled trial (Zelen design) conducted in Newcastle, Australia, eight postcards were sent to participants over a 12-month period. The principal outcomes were the proportion of participants with one or more repeat episodes of self-poisoning and the number of repeat episodes per person.ResultsNo significant reduction was observed in the proportion of people repeating self-poisoning in the intervention group (21.2%, 95% CI 17.0–25.3) compared with the control group (22.8%, 95% CI 18.7–27.0; χ2=0.32, d.f. = 1, P= 0.57); the difference between groups was −1.7% (95% CI −7.5 to 4.2). There was a significant reduction in the rate of repetition, with an incidence risk ratio of 0.49 (95% CI 0.33–0.73).ConclusionsA postcard intervention maintained the halving of the rate of repetition of hospital-treated self-poisoning events over a 2-year period, although it did not significantly reduce the proportion of individuals who repeated self-poisoning. PDF: carter_2007_postcards_from_the_edge_-_24-month_outcomes_of_a_randomised_controlled_trial_for.pdf