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Group Therapy for Repeated Deliberate Self-Harm in Adolescents: Failure of Replication of a Randomized Trial

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Abstract

Objective

To replicate a study, which found group therapy superior to routine care in preventing the recurrence of self-harming behavior in adolescents who had deliberately harmed themselves on at least two occasions.

Method

Single blind study with parallel randomized groups undertaken in three sites in Australia. The primary outcome measure was repetition of self-harm, assessed on average after 6 and 12 months. Secondary outcome measures included suicidal ideation, psychiatric disorder, and service use.

Results

Seventy-two adolescents aged 12 to 16 years (91% female subjects) were randomized to group therapy or routine care. Primary outcome data were available for 68 of the 72 randomized participants. More adolescents randomized to group therapy than those randomized to routine care had self-harmed by 6 months (30/34 versus 23/34, χ2 = 4.19, p = .04), and there was a statistically nonsignificant trend for this pattern to be repeated in the interval of 6 to 12 months (30/34 versus 24/34, χ2 = 3.24, p = .07). There were few differences between the treatment groups on secondary outcome measures, other than a trend for greater improvement over time on global symptom ratings among the experimental group compared with the control group.

Conclusions

Our findings contradict those of the original study. Some differences in participant characteristics between the studies, along with less experience at the Australian sites in delivering the intervention, may have accounted for the different outcome. The benefit of group therapy for deliberate self-harm is unproven outside the environment in which it was originally developed. J. Am. Acad. Child Adolesc. Psychiatry, 2009;48(6):662–670.

Section snippets

Entry Criteria

Participants were eligible if they were aged between 12 and 16 years, had been referred to a child and adolescent mental health service in Australian sites at Newcastle, Brisbane North, or Logan, and reported at least two episodes of self-harm in the past year, one of which had occurred in the past 3 months. Deliberate self-harm was defined as any intentional self-inflicted injury (including poisoning) irrespective of the apparent purpose of the behavior. Poisoning as a result of excessive use

Participant Characteristics

The demographic and clinical characteristics of the randomized participants, organized by treatment group, are summarized in Table 1. Comparison groups were well matched on most variables, the exception being medication overdose, which was more prevalent in the experimental group than the routine care group.

The participants commonly engaged in multiple types of self-harm, which were reported with the following rates: cutting, 97%; head banging, 71%; medication overdose, 57%; smothering, 36%;

Discussion

We sought to determine if a form of group psychotherapy developed in Manchester in the United Kingdom would translate to the Australian setting and be more effective than routine care in reducing the recurrence of self-harm in a clinical sample of teenagers treated in Brisbane, Logan North or Newcastle. In contrast to the first published evaluation of the group psychotherapy,15 we found a tendency for more participants in the experimental group than the routine care group to engage in self-harm

Conclusions

We failed to replicate a finding from a British study that group psychotherapy reduces the likelihood of self-harm repetition among adolescent mental health outpatients. In our study, there was greater tendency for those randomized to the experimental group to continue to self-harm than there was for those randomized to routine care, although this could be an artifact arising from baseline differences in rates of previous medication overdose. There was a tendency for those randomized to the

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    The research was supported by the American Foundation for Suicide Prevention.

    Clinical trial registration information–Group Psychotherapy to Reduce the Repetition of Self-Harm in Adolescents. URL: http://www.ANZCTR.org.au. Unique identifier: ACTRN12608000532303.

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